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Finding the Fourth Proportional to 42,908.60, 64,233.30 and 37,724.60

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Solution

The fourth proportional to 42,908.60, 64,233.30 and 37,724.60 is: 56,472.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,908.60 : 64,233.30 = 37,724.60 : x
  2. Step 2: Convert to fraction form
    42,908.60/64,233.30 = 37,724.60/x
  3. Step 3: Cross multiply
    42,908.60x = 64,233.30 × 37,724.60
  4. Step 4: Simplify right side
    42,908.60x = 2,423,175,549.18
  5. Step 5: Solve for x
    x = 2,423,175,549.18/42,908.60
  6. Step 6: Final answer
    x = 56,472.96

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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.