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Finding the Fourth Proportional to 693,934.32, 957,616.92 and 392,121.84

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Solution

The fourth proportional to 693,934.32, 957,616.92 and 392,121.84 is: 541,121.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,934.32 : 957,616.92 = 392,121.84 : x
  2. Step 2: Convert to fraction form
    693,934.32/957,616.92 = 392,121.84/x
  3. Step 3: Cross multiply
    693,934.32x = 957,616.92 × 392,121.84
  4. Step 4: Simplify right side
    693,934.32x = 375,502,508,685.53
  5. Step 5: Solve for x
    x = 375,502,508,685.53/693,934.32
  6. Step 6: Final answer
    x = 541,121.11

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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.