Home / 65,890,000.40-98,788,920.60-38,949,789.20

Finding the Fourth Proportional to 65,890,000.40, 98,788,920.60 and 38,949,789.20

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Solution

The fourth proportional to 65,890,000.40, 98,788,920.60 and 38,949,789.20 is: 58,397,444.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,890,000.40 : 98,788,920.60 = 38,949,789.20 : x
  2. Step 2: Convert to fraction form
    65,890,000.40/98,788,920.60 = 38,949,789.20/x
  3. Step 3: Cross multiply
    65,890,000.40x = 98,788,920.60 × 38,949,789.20
  4. Step 4: Simplify right side
    65,890,000.40x = 3,847,807,632,665,537.50
  5. Step 5: Solve for x
    x = 3,847,807,632,665,537.50/65,890,000.40
  6. Step 6: Final answer
    x = 58,397,444.37

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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.