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Finding the Fourth Proportional to 690,550.83, 953,008.07 and 418,630.19

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Solution

The fourth proportional to 690,550.83, 953,008.07 and 418,630.19 is: 577,738.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,550.83 : 953,008.07 = 418,630.19 : x
  2. Step 2: Convert to fraction form
    690,550.83/953,008.07 = 418,630.19/x
  3. Step 3: Cross multiply
    690,550.83x = 953,008.07 × 418,630.19
  4. Step 4: Simplify right side
    690,550.83x = 398,957,942,557.44
  5. Step 5: Solve for x
    x = 398,957,942,557.44/690,550.83
  6. Step 6: Final answer
    x = 577,738.71

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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.