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Finding the Fourth Proportional to 283,920.28, 391,795.86 and 156,588.28

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Solution

The fourth proportional to 283,920.28, 391,795.86 and 156,588.28 is: 216,084.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,920.28 : 391,795.86 = 156,588.28 : x
  2. Step 2: Convert to fraction form
    283,920.28/391,795.86 = 156,588.28/x
  3. Step 3: Cross multiply
    283,920.28x = 391,795.86 × 156,588.28
  4. Step 4: Simplify right side
    283,920.28x = 61,350,639,828.52
  5. Step 5: Solve for x
    x = 61,350,639,828.52/283,920.28
  6. Step 6: Final answer
    x = 216,084.04

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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.