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Finding the Fourth Proportional to 283,671.71, 391,468.76 and 156,347.30

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Solution

The fourth proportional to 283,671.71, 391,468.76 and 156,347.30 is: 215,760.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,671.71 : 391,468.76 = 156,347.30 : x
  2. Step 2: Convert to fraction form
    283,671.71/391,468.76 = 156,347.30/x
  3. Step 3: Cross multiply
    283,671.71x = 391,468.76 × 156,347.30
  4. Step 4: Simplify right side
    283,671.71x = 61,205,083,660.35
  5. Step 5: Solve for x
    x = 61,205,083,660.35/283,671.71
  6. Step 6: Final answer
    x = 215,760.27

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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.