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Finding the Fourth Proportional to 92,468.27, 138,689.65 and 39,870.92

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Solution

The fourth proportional to 92,468.27, 138,689.65 and 39,870.92 is: 59,800.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,468.27 : 138,689.65 = 39,870.92 : x
  2. Step 2: Convert to fraction form
    92,468.27/138,689.65 = 39,870.92/x
  3. Step 3: Cross multiply
    92,468.27x = 138,689.65 × 39,870.92
  4. Step 4: Simplify right side
    92,468.27x = 5,529,683,939.98
  5. Step 5: Solve for x
    x = 5,529,683,939.98/92,468.27
  6. Step 6: Final answer
    x = 59,800.88

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1.5x scale

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.