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Finding the Fourth Proportional to 72,671.31, 108,956.66 and 37,063.53

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Solution

The fourth proportional to 72,671.31, 108,956.66 and 37,063.53 is: 55,569.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,671.31 : 108,956.66 = 37,063.53 : x
  2. Step 2: Convert to fraction form
    72,671.31/108,956.66 = 37,063.53/x
  3. Step 3: Cross multiply
    72,671.31x = 108,956.66 × 37,063.53
  4. Step 4: Simplify right side
    72,671.31x = 4,038,318,251.29
  5. Step 5: Solve for x
    x = 4,038,318,251.29/72,671.31
  6. Step 6: Final answer
    x = 55,569.64

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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.