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Finding the Fourth Proportional to 283,801.95, 391,628.84 and 156,478.59

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Solution

The fourth proportional to 283,801.95, 391,628.84 and 156,478.59 is: 215,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,801.95 : 391,628.84 = 156,478.59 : x
  2. Step 2: Convert to fraction form
    283,801.95/391,628.84 = 156,478.59/x
  3. Step 3: Cross multiply
    283,801.95x = 391,628.84 × 156,478.59
  4. Step 4: Simplify right side
    283,801.95x = 61,281,527,904.14
  5. Step 5: Solve for x
    x = 61,281,527,904.14/283,801.95
  6. Step 6: Final answer
    x = 215,930.61

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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.