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Finding the Fourth Proportional to 18,312.61, 27,606.17 and 17,091.98

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Solution

The fourth proportional to 18,312.61, 27,606.17 and 17,091.98 is: 25,766.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.61 : 27,606.17 = 17,091.98 : x
  2. Step 2: Convert to fraction form
    18,312.61/27,606.17 = 17,091.98/x
  3. Step 3: Cross multiply
    18,312.61x = 27,606.17 × 17,091.98
  4. Step 4: Simplify right side
    18,312.61x = 471,844,174.74
  5. Step 5: Solve for x
    x = 471,844,174.74/18,312.61
  6. Step 6: Final answer
    x = 25,766.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.