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Finding the Fourth Proportional to 17,188.99, 25,665.89 and 15,398.48

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Solution

The fourth proportional to 17,188.99, 25,665.89 and 15,398.48 is: 22,992.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,188.99 : 25,665.89 = 15,398.48 : x
  2. Step 2: Convert to fraction form
    17,188.99/25,665.89 = 15,398.48/x
  3. Step 3: Cross multiply
    17,188.99x = 25,665.89 × 15,398.48
  4. Step 4: Simplify right side
    17,188.99x = 395,215,681.02
  5. Step 5: Solve for x
    x = 395,215,681.02/17,188.99
  6. Step 6: Final answer
    x = 22,992.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.