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Finding the Fourth Proportional to 39,857,216.40, 59,691,346.20 and 39,857,216.40

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Solution

The fourth proportional to 39,857,216.40, 59,691,346.20 and 39,857,216.40 is: 59,691,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857,216.40 : 59,691,346.20 = 39,857,216.40 : x
  2. Step 2: Convert to fraction form
    39,857,216.40/59,691,346.20 = 39,857,216.40/x
  3. Step 3: Cross multiply
    39,857,216.40x = 59,691,346.20 × 39,857,216.40
  4. Step 4: Simplify right side
    39,857,216.40x = 2,379,130,902,700,717.50
  5. Step 5: Solve for x
    x = 2,379,130,902,700,717.50/39,857,216.40
  6. Step 6: Final answer
    x = 59,691,346.20

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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.