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Finding the Fourth Proportional to 283,782.60, 391,622.82 and 156,454.92

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Solution

The fourth proportional to 283,782.60, 391,622.82 and 156,454.92 is: 215,909.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,782.60 : 391,622.82 = 156,454.92 : x
  2. Step 2: Convert to fraction form
    283,782.60/391,622.82 = 156,454.92/x
  3. Step 3: Cross multiply
    283,782.60x = 391,622.82 × 156,454.92
  4. Step 4: Simplify right side
    283,782.60x = 61,271,316,973.27
  5. Step 5: Solve for x
    x = 61,271,316,973.27/283,782.60
  6. Step 6: Final answer
    x = 215,909.35

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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.