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Finding the Fourth Proportional to 192,891.40, 289,250.70 and 87,656.20

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Solution

The fourth proportional to 192,891.40, 289,250.70 and 87,656.20 is: 131,445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,891.40 : 289,250.70 = 87,656.20 : x
  2. Step 2: Convert to fraction form
    192,891.40/289,250.70 = 87,656.20/x
  3. Step 3: Cross multiply
    192,891.40x = 289,250.70 × 87,656.20
  4. Step 4: Simplify right side
    192,891.40x = 25,354,617,209.34
  5. Step 5: Solve for x
    x = 25,354,617,209.34/192,891.40
  6. Step 6: Final answer
    x = 131,445.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.