Home / 86,580,618.60-129,870,927.90-78,770,404.20

Finding the Fourth Proportional to 86,580,618.60, 129,870,927.90 and 78,770,404.20

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Solution

The fourth proportional to 86,580,618.60, 129,870,927.90 and 78,770,404.20 is: 118,155,606.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,580,618.60 : 129,870,927.90 = 78,770,404.20 : x
  2. Step 2: Convert to fraction form
    86,580,618.60/129,870,927.90 = 78,770,404.20/x
  3. Step 3: Cross multiply
    86,580,618.60x = 129,870,927.90 × 78,770,404.20
  4. Step 4: Simplify right side
    86,580,618.60x = 10,229,985,484,512,058
  5. Step 5: Solve for x
    x = 10,229,985,484,512,058/86,580,618.60
  6. Step 6: Final answer
    x = 118,155,606.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.