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Finding the Fourth Proportional to 61,071,796.80, 91,607,695.20 and 50,301,259.20

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Solution

The fourth proportional to 61,071,796.80, 91,607,695.20 and 50,301,259.20 is: 75,451,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,071,796.80 : 91,607,695.20 = 50,301,259.20 : x
  2. Step 2: Convert to fraction form
    61,071,796.80/91,607,695.20 = 50,301,259.20/x
  3. Step 3: Cross multiply
    61,071,796.80x = 91,607,695.20 × 50,301,259.20
  4. Step 4: Simplify right side
    61,071,796.80x = 4,607,982,420,969,796
  5. Step 5: Solve for x
    x = 4,607,982,420,969,796/61,071,796.80
  6. Step 6: Final answer
    x = 75,451,888.80

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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.