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Finding the Fourth Proportional to 100,988.68, 151,650.94 and 63,125.64

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Solution

The fourth proportional to 100,988.68, 151,650.94 and 63,125.64 is: 94,793.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,988.68 : 151,650.94 = 63,125.64 : x
  2. Step 2: Convert to fraction form
    100,988.68/151,650.94 = 63,125.64/x
  3. Step 3: Cross multiply
    100,988.68x = 151,650.94 × 63,125.64
  4. Step 4: Simplify right side
    100,988.68x = 9,573,062,644.10
  5. Step 5: Solve for x
    x = 9,573,062,644.10/100,988.68
  6. Step 6: Final answer
    x = 94,793.42

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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.