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Finding the Fourth Proportional to 283,855.20, 391,702.32 and 156,531.84

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Solution

The fourth proportional to 283,855.20, 391,702.32 and 156,531.84 is: 216,004.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,855.20 : 391,702.32 = 156,531.84 : x
  2. Step 2: Convert to fraction form
    283,855.20/391,702.32 = 156,531.84/x
  3. Step 3: Cross multiply
    283,855.20x = 391,702.32 × 156,531.84
  4. Step 4: Simplify right side
    283,855.20x = 61,313,884,881.87
  5. Step 5: Solve for x
    x = 61,313,884,881.87/283,855.20
  6. Step 6: Final answer
    x = 216,004.09

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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.