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Finding the Fourth Proportional to 151,616.68, 209,214.29 and 87,942.17

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Solution

The fourth proportional to 151,616.68, 209,214.29 and 87,942.17 is: 121,350.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,616.68 : 209,214.29 = 87,942.17 : x
  2. Step 2: Convert to fraction form
    151,616.68/209,214.29 = 87,942.17/x
  3. Step 3: Cross multiply
    151,616.68x = 209,214.29 × 87,942.17
  4. Step 4: Simplify right side
    151,616.68x = 18,398,759,400.50
  5. Step 5: Solve for x
    x = 18,398,759,400.50/151,616.68
  6. Step 6: Final answer
    x = 121,350.50

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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.