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Finding the Fourth Proportional to 82,689.46, 124,045.22 and 26,510.90

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Solution

The fourth proportional to 82,689.46, 124,045.22 and 26,510.90 is: 39,769.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,689.46 : 124,045.22 = 26,510.90 : x
  2. Step 2: Convert to fraction form
    82,689.46/124,045.22 = 26,510.90/x
  3. Step 3: Cross multiply
    82,689.46x = 124,045.22 × 26,510.90
  4. Step 4: Simplify right side
    82,689.46x = 3,288,549,868.95
  5. Step 5: Solve for x
    x = 3,288,549,868.95/82,689.46
  6. Step 6: Final answer
    x = 39,769.88

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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.