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Finding the Fourth Proportional to 53,374.52, 80,061.78 and 13,931.29

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Solution

The fourth proportional to 53,374.52, 80,061.78 and 13,931.29 is: 20,896.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,374.52 : 80,061.78 = 13,931.29 : x
  2. Step 2: Convert to fraction form
    53,374.52/80,061.78 = 13,931.29/x
  3. Step 3: Cross multiply
    53,374.52x = 80,061.78 × 13,931.29
  4. Step 4: Simplify right side
    53,374.52x = 1,115,363,875.10
  5. Step 5: Solve for x
    x = 1,115,363,875.10/53,374.52
  6. Step 6: Final answer
    x = 20,896.94

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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.