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Finding the Fourth Proportional to 105,387.68, 158,081.52 and 43,058.18

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Solution

The fourth proportional to 105,387.68, 158,081.52 and 43,058.18 is: 64,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,387.68 : 158,081.52 = 43,058.18 : x
  2. Step 2: Convert to fraction form
    105,387.68/158,081.52 = 43,058.18/x
  3. Step 3: Cross multiply
    105,387.68x = 158,081.52 × 43,058.18
  4. Step 4: Simplify right side
    105,387.68x = 6,806,702,542.83
  5. Step 5: Solve for x
    x = 6,806,702,542.83/105,387.68
  6. Step 6: Final answer
    x = 64,587.27

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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.