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Finding the Fourth Proportional to 99,838.71, 137,783.01 and 54,520.92

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Solution

The fourth proportional to 99,838.71, 137,783.01 and 54,520.92 is: 75,241.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,838.71 : 137,783.01 = 54,520.92 : x
  2. Step 2: Convert to fraction form
    99,838.71/137,783.01 = 54,520.92/x
  3. Step 3: Cross multiply
    99,838.71x = 137,783.01 × 54,520.92
  4. Step 4: Simplify right side
    99,838.71x = 7,512,056,465.57
  5. Step 5: Solve for x
    x = 7,512,056,465.57/99,838.71
  6. Step 6: Final answer
    x = 75,241.92

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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.