Home / 128,328,262,909.56-177,111,418,833-76,888,854,176.76

Finding the Fourth Proportional to 128,328,262,909.56, 177,111,418,833 and 76,888,854,176.76

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Solution

The fourth proportional to 128,328,262,909.56, 177,111,418,833 and 76,888,854,176.76 is: 106,117,652,860.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,328,262,909.56 : 177,111,418,833 = 76,888,854,176.76 : x
  2. Step 2: Convert to fraction form
    128,328,262,909.56/177,111,418,833 = 76,888,854,176.76/x
  3. Step 3: Cross multiply
    128,328,262,909.56x = 177,111,418,833 × 76,888,854,176.76
  4. Step 4: Simplify right side
    128,328,262,909.56x = 13,617,894,055,689,601,417,216
  5. Step 5: Solve for x
    x = 13,617,894,055,689,601,417,216/128,328,262,909.56
  6. Step 6: Final answer
    x = 106,117,652,860.98

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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.