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Finding the Fourth Proportional to 63,639.60, 87,807.42 and 38,153.76

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Solution

The fourth proportional to 63,639.60, 87,807.42 and 38,153.76 is: 52,643.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,639.60 : 87,807.42 = 38,153.76 : x
  2. Step 2: Convert to fraction form
    63,639.60/87,807.42 = 38,153.76/x
  3. Step 3: Cross multiply
    63,639.60x = 87,807.42 × 38,153.76
  4. Step 4: Simplify right side
    63,639.60x = 3,350,183,228.90
  5. Step 5: Solve for x
    x = 3,350,183,228.90/63,639.60
  6. Step 6: Final answer
    x = 52,643.06

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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.