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Finding the Fourth Proportional to 283,333.56, 391,008.92 and 156,013.71

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Solution

The fourth proportional to 283,333.56, 391,008.92 and 156,013.71 is: 215,303.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,333.56 : 391,008.92 = 156,013.71 : x
  2. Step 2: Convert to fraction form
    283,333.56/391,008.92 = 156,013.71/x
  3. Step 3: Cross multiply
    283,333.56x = 391,008.92 × 156,013.71
  4. Step 4: Simplify right side
    283,333.56x = 61,002,751,472.22
  5. Step 5: Solve for x
    x = 61,002,751,472.22/283,333.56
  6. Step 6: Final answer
    x = 215,303.66

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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.