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Finding the Fourth Proportional to 69,136.40, 95,384.36 and 38,916.88

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Solution

The fourth proportional to 69,136.40, 95,384.36 and 38,916.88 is: 53,691.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,136.40 : 95,384.36 = 38,916.88 : x
  2. Step 2: Convert to fraction form
    69,136.40/95,384.36 = 38,916.88/x
  3. Step 3: Cross multiply
    69,136.40x = 95,384.36 × 38,916.88
  4. Step 4: Simplify right side
    69,136.40x = 3,712,061,692.00
  5. Step 5: Solve for x
    x = 3,712,061,692.00/69,136.40
  6. Step 6: Final answer
    x = 53,691.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.