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Finding the Fourth Proportional to 65,172,562.80, 97,758,844.20 and 64,164,793.20

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Solution

The fourth proportional to 65,172,562.80, 97,758,844.20 and 64,164,793.20 is: 96,247,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,172,562.80 : 97,758,844.20 = 64,164,793.20 : x
  2. Step 2: Convert to fraction form
    65,172,562.80/97,758,844.20 = 64,164,793.20/x
  3. Step 3: Cross multiply
    65,172,562.80x = 97,758,844.20 × 64,164,793.20
  4. Step 4: Simplify right side
    65,172,562.80x = 6,272,676,021,564,020
  5. Step 5: Solve for x
    x = 6,272,676,021,564,020/65,172,562.80
  6. Step 6: Final answer
    x = 96,247,189.80

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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.