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Finding the Fourth Proportional to 151,508.87, 209,101.17 and 86,998.29

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Solution

The fourth proportional to 151,508.87, 209,101.17 and 86,998.29 is: 120,068.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,508.87 : 209,101.17 = 86,998.29 : x
  2. Step 2: Convert to fraction form
    151,508.87/209,101.17 = 86,998.29/x
  3. Step 3: Cross multiply
    151,508.87x = 209,101.17 × 86,998.29
  4. Step 4: Simplify right side
    151,508.87x = 18,191,444,848.01
  5. Step 5: Solve for x
    x = 18,191,444,848.01/151,508.87
  6. Step 6: Final answer
    x = 120,068.51

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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.