Home / 85,893,150-129,306,914.76-78,265,943.76

Finding the Fourth Proportional to 85,893,150, 129,306,914.76 and 78,265,943.76

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Solution

The fourth proportional to 85,893,150, 129,306,914.76 and 78,265,943.76 is: 117,824,619.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,893,150 : 129,306,914.76 = 78,265,943.76 : x
  2. Step 2: Convert to fraction form
    85,893,150/129,306,914.76 = 78,265,943.76/x
  3. Step 3: Cross multiply
    85,893,150x = 129,306,914.76 × 78,265,943.76
  4. Step 4: Simplify right side
    85,893,150x = 10,120,327,718,385,276
  5. Step 5: Solve for x
    x = 10,120,327,718,385,276/85,893,150
  6. Step 6: Final answer
    x = 117,824,619.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.