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Finding the Fourth Proportional to 649,540.62, 896,347.52 and 359,147.19

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Solution

The fourth proportional to 649,540.62, 896,347.52 and 359,147.19 is: 495,612.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,540.62 : 896,347.52 = 359,147.19 : x
  2. Step 2: Convert to fraction form
    649,540.62/896,347.52 = 359,147.19/x
  3. Step 3: Cross multiply
    649,540.62x = 896,347.52 × 359,147.19
  4. Step 4: Simplify right side
    649,540.62x = 321,920,693,071.47
  5. Step 5: Solve for x
    x = 321,920,693,071.47/649,540.62
  6. Step 6: Final answer
    x = 495,612.87

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Double scale
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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.