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Finding the Fourth Proportional to 288,627.55, 398,046.45 and 186,545.68

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Solution

The fourth proportional to 288,627.55, 398,046.45 and 186,545.68 is: 257,265.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,627.55 : 398,046.45 = 186,545.68 : x
  2. Step 2: Convert to fraction form
    288,627.55/398,046.45 = 186,545.68/x
  3. Step 3: Cross multiply
    288,627.55x = 398,046.45 × 186,545.68
  4. Step 4: Simplify right side
    288,627.55x = 74,253,847,630.28
  5. Step 5: Solve for x
    x = 74,253,847,630.28/288,627.55
  6. Step 6: Final answer
    x = 257,265.28

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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.