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Finding the Fourth Proportional to 67,481, 101,152.38 and 28,061

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Solution

The fourth proportional to 67,481, 101,152.38 and 28,061 is: 42,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,481 : 101,152.38 = 28,061 : x
  2. Step 2: Convert to fraction form
    67,481/101,152.38 = 28,061/x
  3. Step 3: Cross multiply
    67,481x = 101,152.38 × 28,061
  4. Step 4: Simplify right side
    67,481x = 2,838,436,935.18
  5. Step 5: Solve for x
    x = 2,838,436,935.18/67,481
  6. Step 6: Final answer
    x = 42,062.76

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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.