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Finding the Fourth Proportional to 261,758.28, 391,862.39 and 161,596.41

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Solution

The fourth proportional to 261,758.28, 391,862.39 and 161,596.41 is: 241,916.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,758.28 : 391,862.39 = 161,596.41 : x
  2. Step 2: Convert to fraction form
    261,758.28/391,862.39 = 161,596.41/x
  3. Step 3: Cross multiply
    261,758.28x = 391,862.39 × 161,596.41
  4. Step 4: Simplify right side
    261,758.28x = 63,323,554,630.04
  5. Step 5: Solve for x
    x = 63,323,554,630.04/261,758.28
  6. Step 6: Final answer
    x = 241,916.15

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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.