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Finding the Fourth Proportional to 66,569,663.80, 99,854,495.70 and 32,512,857.40

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Solution

The fourth proportional to 66,569,663.80, 99,854,495.70 and 32,512,857.40 is: 48,769,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,569,663.80 : 99,854,495.70 = 32,512,857.40 : x
  2. Step 2: Convert to fraction form
    66,569,663.80/99,854,495.70 = 32,512,857.40/x
  3. Step 3: Cross multiply
    66,569,663.80x = 99,854,495.70 × 32,512,857.40
  4. Step 4: Simplify right side
    66,569,663.80x = 3,246,554,979,443,013
  5. Step 5: Solve for x
    x = 3,246,554,979,443,013/66,569,663.80
  6. Step 6: Final answer
    x = 48,769,286.10

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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.