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Finding the Fourth Proportional to 283,800.79, 391,637.59 and 156,473.11

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Solution

The fourth proportional to 283,800.79, 391,637.59 and 156,473.11 is: 215,928.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,800.79 : 391,637.59 = 156,473.11 : x
  2. Step 2: Convert to fraction form
    283,800.79/391,637.59 = 156,473.11/x
  3. Step 3: Cross multiply
    283,800.79x = 391,637.59 × 156,473.11
  4. Step 4: Simplify right side
    283,800.79x = 61,280,751,700.20
  5. Step 5: Solve for x
    x = 61,280,751,700.20/283,800.79
  6. Step 6: Final answer
    x = 215,928.76

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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.