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Finding the Fourth Proportional to 283,625.73, 391,411.71 and 156,309.53

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Solution

The fourth proportional to 283,625.73, 391,411.71 and 156,309.53 is: 215,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,625.73 : 391,411.71 = 156,309.53 : x
  2. Step 2: Convert to fraction form
    283,625.73/391,411.71 = 156,309.53/x
  3. Step 3: Cross multiply
    283,625.73x = 391,411.71 × 156,309.53
  4. Step 4: Simplify right side
    283,625.73x = 61,181,378,469.54
  5. Step 5: Solve for x
    x = 61,181,378,469.54/283,625.73
  6. Step 6: Final answer
    x = 215,711.67

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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.