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Finding the Fourth Proportional to 498,169.86, 687,489.57 and 283,340.85

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Solution

The fourth proportional to 498,169.86, 687,489.57 and 283,340.85 is: 391,019.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,169.86 : 687,489.57 = 283,340.85 : x
  2. Step 2: Convert to fraction form
    498,169.86/687,489.57 = 283,340.85/x
  3. Step 3: Cross multiply
    498,169.86x = 687,489.57 × 283,340.85
  4. Step 4: Simplify right side
    498,169.86x = 194,793,879,129.93
  5. Step 5: Solve for x
    x = 194,793,879,129.93/498,169.86
  6. Step 6: Final answer
    x = 391,019.00

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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.