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Finding the Fourth Proportional to 283,659.61, 391,449.45 and 156,335.17

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Solution

The fourth proportional to 283,659.61, 391,449.45 and 156,335.17 is: 215,742.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,659.61 : 391,449.45 = 156,335.17 : x
  2. Step 2: Convert to fraction form
    283,659.61/391,449.45 = 156,335.17/x
  3. Step 3: Cross multiply
    283,659.61x = 391,449.45 × 156,335.17
  4. Step 4: Simplify right side
    283,659.61x = 61,197,316,312.16
  5. Step 5: Solve for x
    x = 61,197,316,312.16/283,659.61
  6. Step 6: Final answer
    x = 215,742.09

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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.