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Finding the Fourth Proportional to 158,578.96, 218,627.26 and 125,981.53

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Solution

The fourth proportional to 158,578.96, 218,627.26 and 125,981.53 is: 173,686.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,578.96 : 218,627.26 = 125,981.53 : x
  2. Step 2: Convert to fraction form
    158,578.96/218,627.26 = 125,981.53/x
  3. Step 3: Cross multiply
    158,578.96x = 218,627.26 × 125,981.53
  4. Step 4: Simplify right side
    158,578.96x = 27,542,996,714.51
  5. Step 5: Solve for x
    x = 27,542,996,714.51/158,578.96
  6. Step 6: Final answer
    x = 173,686.32

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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.