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Finding the Fourth Proportional to 159,721.88, 220,427.12 and 92,653.88

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Solution

The fourth proportional to 159,721.88, 220,427.12 and 92,653.88 is: 127,868.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,721.88 : 220,427.12 = 92,653.88 : x
  2. Step 2: Convert to fraction form
    159,721.88/220,427.12 = 92,653.88/x
  3. Step 3: Cross multiply
    159,721.88x = 220,427.12 × 92,653.88
  4. Step 4: Simplify right side
    159,721.88x = 20,423,427,925.23
  5. Step 5: Solve for x
    x = 20,423,427,925.23/159,721.88
  6. Step 6: Final answer
    x = 127,868.69

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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.