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Finding the Fourth Proportional to 364,854.54, 547,310.98 and 128,250.30

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Solution

The fourth proportional to 364,854.54, 547,310.98 and 128,250.30 is: 192,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,854.54 : 547,310.98 = 128,250.30 : x
  2. Step 2: Convert to fraction form
    364,854.54/547,310.98 = 128,250.30/x
  3. Step 3: Cross multiply
    364,854.54x = 547,310.98 × 128,250.30
  4. Step 4: Simplify right side
    364,854.54x = 70,192,797,378.29
  5. Step 5: Solve for x
    x = 70,192,797,378.29/364,854.54
  6. Step 6: Final answer
    x = 192,385.70

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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.