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Finding the Fourth Proportional to 124,170.48, 171,345.24 and 86,526

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Solution

The fourth proportional to 124,170.48, 171,345.24 and 86,526 is: 119,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,170.48 : 171,345.24 = 86,526 : x
  2. Step 2: Convert to fraction form
    124,170.48/171,345.24 = 86,526/x
  3. Step 3: Cross multiply
    124,170.48x = 171,345.24 × 86,526
  4. Step 4: Simplify right side
    124,170.48x = 14,825,818,236.24
  5. Step 5: Solve for x
    x = 14,825,818,236.24/124,170.48
  6. Step 6: Final answer
    x = 119,398.90

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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.