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Finding the Fourth Proportional to 18,299.67, 25,253.60 and 9,916.17

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Solution

The fourth proportional to 18,299.67, 25,253.60 and 9,916.17 is: 13,684.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.67 : 25,253.60 = 9,916.17 : x
  2. Step 2: Convert to fraction form
    18,299.67/25,253.60 = 9,916.17/x
  3. Step 3: Cross multiply
    18,299.67x = 25,253.60 × 9,916.17
  4. Step 4: Simplify right side
    18,299.67x = 250,418,941.13
  5. Step 5: Solve for x
    x = 250,418,941.13/18,299.67
  6. Step 6: Final answer
    x = 13,684.34

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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.