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Finding the Fourth Proportional to 8,857,691.20, 13,265,541.60 and 8,857,691.20

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Solution

The fourth proportional to 8,857,691.20, 13,265,541.60 and 8,857,691.20 is: 13,265,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857,691.20 : 13,265,541.60 = 8,857,691.20 : x
  2. Step 2: Convert to fraction form
    8,857,691.20/13,265,541.60 = 8,857,691.20/x
  3. Step 3: Cross multiply
    8,857,691.20x = 13,265,541.60 × 8,857,691.20
  4. Step 4: Simplify right side
    8,857,691.20x = 117,502,071,093,553.91
  5. Step 5: Solve for x
    x = 117,502,071,093,553.91/8,857,691.20
  6. Step 6: Final answer
    x = 13,265,541.60

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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.