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Finding the Fourth Proportional to 67,473, 101,209.50 and 20,725.88

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Solution

The fourth proportional to 67,473, 101,209.50 and 20,725.88 is: 31,088.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,473 : 101,209.50 = 20,725.88 : x
  2. Step 2: Convert to fraction form
    67,473/101,209.50 = 20,725.88/x
  3. Step 3: Cross multiply
    67,473x = 101,209.50 × 20,725.88
  4. Step 4: Simplify right side
    67,473x = 2,097,655,445.81
  5. Step 5: Solve for x
    x = 2,097,655,445.81/67,473
  6. Step 6: Final answer
    x = 31,088.81

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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.