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Finding the Fourth Proportional to 61,248.75, 84,529.76 and 38,892.75

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Solution

The fourth proportional to 61,248.75, 84,529.76 and 38,892.75 is: 53,676.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,248.75 : 84,529.76 = 38,892.75 : x
  2. Step 2: Convert to fraction form
    61,248.75/84,529.76 = 38,892.75/x
  3. Step 3: Cross multiply
    61,248.75x = 84,529.76 × 38,892.75
  4. Step 4: Simplify right side
    61,248.75x = 3,287,594,628.78
  5. Step 5: Solve for x
    x = 3,287,594,628.78/61,248.75
  6. Step 6: Final answer
    x = 53,676.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.