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Finding the Fourth Proportional to 158,126.58, 218,347.65 and 112,943.16

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Solution

The fourth proportional to 158,126.58, 218,347.65 and 112,943.16 is: 155,956.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,126.58 : 218,347.65 = 112,943.16 : x
  2. Step 2: Convert to fraction form
    158,126.58/218,347.65 = 112,943.16/x
  3. Step 3: Cross multiply
    158,126.58x = 218,347.65 × 112,943.16
  4. Step 4: Simplify right side
    158,126.58x = 24,660,873,569.57
  5. Step 5: Solve for x
    x = 24,660,873,569.57/158,126.58
  6. Step 6: Final answer
    x = 155,956.54

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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.