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Finding the Fourth Proportional to 57,964,430.80, 86,957,143.80 and 29,138,021.20

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Solution

The fourth proportional to 57,964,430.80, 86,957,143.80 and 29,138,021.20 is: 43,712,308.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,964,430.80 : 86,957,143.80 = 29,138,021.20 : x
  2. Step 2: Convert to fraction form
    57,964,430.80/86,957,143.80 = 29,138,021.20/x
  3. Step 3: Cross multiply
    57,964,430.80x = 86,957,143.80 × 29,138,021.20
  4. Step 4: Simplify right side
    57,964,430.80x = 2,533,759,099,535,848.50
  5. Step 5: Solve for x
    x = 2,533,759,099,535,848.50/57,964,430.80
  6. Step 6: Final answer
    x = 43,712,308.82

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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.