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Finding the Fourth Proportional to 261,493.53, 392,239.65 and 147,589.70

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Solution

The fourth proportional to 261,493.53, 392,239.65 and 147,589.70 is: 221,384.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,493.53 : 392,239.65 = 147,589.70 : x
  2. Step 2: Convert to fraction form
    261,493.53/392,239.65 = 147,589.70/x
  3. Step 3: Cross multiply
    261,493.53x = 392,239.65 × 147,589.70
  4. Step 4: Simplify right side
    261,493.53x = 57,890,533,805.67
  5. Step 5: Solve for x
    x = 57,890,533,805.67/261,493.53
  6. Step 6: Final answer
    x = 221,384.19

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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.