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Finding the Fourth Proportional to 83,894.90, 115,776.15 and 45,655.61

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Solution

The fourth proportional to 83,894.90, 115,776.15 and 45,655.61 is: 63,005.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,894.90 : 115,776.15 = 45,655.61 : x
  2. Step 2: Convert to fraction form
    83,894.90/115,776.15 = 45,655.61/x
  3. Step 3: Cross multiply
    83,894.90x = 115,776.15 × 45,655.61
  4. Step 4: Simplify right side
    83,894.90x = 5,285,830,751.70
  5. Step 5: Solve for x
    x = 5,285,830,751.70/83,894.90
  6. Step 6: Final answer
    x = 63,005.39

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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.