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Finding the Fourth Proportional to 283,478.59, 391,201.50 and 156,153.88

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Solution

The fourth proportional to 283,478.59, 391,201.50 and 156,153.88 is: 215,492.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,478.59 : 391,201.50 = 156,153.88 : x
  2. Step 2: Convert to fraction form
    283,478.59/391,201.50 = 156,153.88/x
  3. Step 3: Cross multiply
    283,478.59x = 391,201.50 × 156,153.88
  4. Step 4: Simplify right side
    283,478.59x = 61,087,632,086.82
  5. Step 5: Solve for x
    x = 61,087,632,086.82/283,478.59
  6. Step 6: Final answer
    x = 215,492.93

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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.