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Finding the Fourth Proportional to 391,717.53, 537,049.71 and 384,631.65

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Solution

The fourth proportional to 391,717.53, 537,049.71 and 384,631.65 is: 527,334.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,717.53 : 537,049.71 = 384,631.65 : x
  2. Step 2: Convert to fraction form
    391,717.53/537,049.71 = 384,631.65/x
  3. Step 3: Cross multiply
    391,717.53x = 537,049.71 × 384,631.65
  4. Step 4: Simplify right side
    391,717.53x = 206,566,314,166.16
  5. Step 5: Solve for x
    x = 206,566,314,166.16/391,717.53
  6. Step 6: Final answer
    x = 527,334.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.