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Finding the Fourth Proportional to 19,625.52, 27,064.60 and 15,142.17

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Solution

The fourth proportional to 19,625.52, 27,064.60 and 15,142.17 is: 20,881.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,625.52 : 27,064.60 = 15,142.17 : x
  2. Step 2: Convert to fraction form
    19,625.52/27,064.60 = 15,142.17/x
  3. Step 3: Cross multiply
    19,625.52x = 27,064.60 × 15,142.17
  4. Step 4: Simplify right side
    19,625.52x = 409,816,774.18
  5. Step 5: Solve for x
    x = 409,816,774.18/19,625.52
  6. Step 6: Final answer
    x = 20,881.83

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1.5x scale

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.