Home / 81,319,975,987.95-112,103,292,222.54-56,829,349,623.29

Finding the Fourth Proportional to 81,319,975,987.95, 112,103,292,222.54 and 56,829,349,623.29

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Solution

The fourth proportional to 81,319,975,987.95, 112,103,292,222.54 and 56,829,349,623.29 is: 78,341,847,869.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,319,975,987.95 : 112,103,292,222.54 = 56,829,349,623.29 : x
  2. Step 2: Convert to fraction form
    81,319,975,987.95/112,103,292,222.54 = 56,829,349,623.29/x
  3. Step 3: Cross multiply
    81,319,975,987.95x = 112,103,292,222.54 × 56,829,349,623.29
  4. Step 4: Simplify right side
    81,319,975,987.95x = 6,370,757,187,636,123,664,384
  5. Step 5: Solve for x
    x = 6,370,757,187,636,123,664,384/81,319,975,987.95
  6. Step 6: Final answer
    x = 78,341,847,869.95

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.