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Finding the Fourth Proportional to 576,640.35, 864,636.55 and 239,454.16

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Solution

The fourth proportional to 576,640.35, 864,636.55 and 239,454.16 is: 359,046.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,640.35 : 864,636.55 = 239,454.16 : x
  2. Step 2: Convert to fraction form
    576,640.35/864,636.55 = 239,454.16/x
  3. Step 3: Cross multiply
    576,640.35x = 864,636.55 × 239,454.16
  4. Step 4: Simplify right side
    576,640.35x = 207,040,816,025.32
  5. Step 5: Solve for x
    x = 207,040,816,025.32/576,640.35
  6. Step 6: Final answer
    x = 359,046.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.