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Finding the Fourth Proportional to 18,805.62, 25,951.62 and 10,307.70

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Solution

The fourth proportional to 18,805.62, 25,951.62 and 10,307.70 is: 14,224.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.62 : 25,951.62 = 10,307.70 : x
  2. Step 2: Convert to fraction form
    18,805.62/25,951.62 = 10,307.70/x
  3. Step 3: Cross multiply
    18,805.62x = 25,951.62 × 10,307.70
  4. Step 4: Simplify right side
    18,805.62x = 267,501,513.47
  5. Step 5: Solve for x
    x = 267,501,513.47/18,805.62
  6. Step 6: Final answer
    x = 14,224.55

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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.