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Finding the Fourth Proportional to 15,696,591.20, 21,924,839.20 and 15,696,591.20

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Solution

The fourth proportional to 15,696,591.20, 21,924,839.20 and 15,696,591.20 is: 21,924,839.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696,591.20 : 21,924,839.20 = 15,696,591.20 : x
  2. Step 2: Convert to fraction form
    15,696,591.20/21,924,839.20 = 15,696,591.20/x
  3. Step 3: Cross multiply
    15,696,591.20x = 21,924,839.20 × 15,696,591.20
  4. Step 4: Simplify right side
    15,696,591.20x = 344,145,238,048,135
  5. Step 5: Solve for x
    x = 344,145,238,048,135/15,696,591.20
  6. Step 6: Final answer
    x = 21,924,839.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.