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Finding the Fourth Proportional to 576,005.40, 862,841.70 and 398,712.60

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Solution

The fourth proportional to 576,005.40, 862,841.70 and 398,712.60 is: 597,261.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,005.40 : 862,841.70 = 398,712.60 : x
  2. Step 2: Convert to fraction form
    576,005.40/862,841.70 = 398,712.60/x
  3. Step 3: Cross multiply
    576,005.40x = 862,841.70 × 398,712.60
  4. Step 4: Simplify right side
    576,005.40x = 344,025,857,595.42
  5. Step 5: Solve for x
    x = 344,025,857,595.42/576,005.40
  6. Step 6: Final answer
    x = 597,261.51

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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.