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Finding the Fourth Proportional to 283,673.71, 391,471.52 and 156,349.30

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Solution

The fourth proportional to 283,673.71, 391,471.52 and 156,349.30 is: 215,763.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,673.71 : 391,471.52 = 156,349.30 : x
  2. Step 2: Convert to fraction form
    283,673.71/391,471.52 = 156,349.30/x
  3. Step 3: Cross multiply
    283,673.71x = 391,471.52 × 156,349.30
  4. Step 4: Simplify right side
    283,673.71x = 61,206,298,121.94
  5. Step 5: Solve for x
    x = 61,206,298,121.94/283,673.71
  6. Step 6: Final answer
    x = 215,763.03

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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.