Home / 82,463,999.20-123,695,998.80-77,761,074.40

Finding the Fourth Proportional to 82,463,999.20, 123,695,998.80 and 77,761,074.40

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Solution

The fourth proportional to 82,463,999.20, 123,695,998.80 and 77,761,074.40 is: 116,641,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,463,999.20 : 123,695,998.80 = 77,761,074.40 : x
  2. Step 2: Convert to fraction form
    82,463,999.20/123,695,998.80 = 77,761,074.40/x
  3. Step 3: Cross multiply
    82,463,999.20x = 123,695,998.80 × 77,761,074.40
  4. Step 4: Simplify right side
    82,463,999.20x = 9,618,733,765,669,112
  5. Step 5: Solve for x
    x = 9,618,733,765,669,112/82,463,999.20
  6. Step 6: Final answer
    x = 116,641,611.60

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Similar ratio
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1.5x scale

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.