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Finding the Fourth Proportional to 18,599.08, 25,663.62 and 11,147.08

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Solution

The fourth proportional to 18,599.08, 25,663.62 and 11,147.08 is: 15,381.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,599.08 : 25,663.62 = 11,147.08 : x
  2. Step 2: Convert to fraction form
    18,599.08/25,663.62 = 11,147.08/x
  3. Step 3: Cross multiply
    18,599.08x = 25,663.62 × 11,147.08
  4. Step 4: Simplify right side
    18,599.08x = 286,074,425.23
  5. Step 5: Solve for x
    x = 286,074,425.23/18,599.08
  6. Step 6: Final answer
    x = 15,381.11

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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.