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Finding the Fourth Proportional to 30,616.98, 42,248.52 and 17,185.16

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Solution

The fourth proportional to 30,616.98, 42,248.52 and 17,185.16 is: 23,713.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,616.98 : 42,248.52 = 17,185.16 : x
  2. Step 2: Convert to fraction form
    30,616.98/42,248.52 = 17,185.16/x
  3. Step 3: Cross multiply
    30,616.98x = 42,248.52 × 17,185.16
  4. Step 4: Simplify right side
    30,616.98x = 726,047,427.38
  5. Step 5: Solve for x
    x = 726,047,427.38/30,616.98
  6. Step 6: Final answer
    x = 23,713.88

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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.