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Finding the Fourth Proportional to 18,259.92, 25,197.53 and 11,091.42

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Solution

The fourth proportional to 18,259.92, 25,197.53 and 11,091.42 is: 15,305.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.92 : 25,197.53 = 11,091.42 : x
  2. Step 2: Convert to fraction form
    18,259.92/25,197.53 = 11,091.42/x
  3. Step 3: Cross multiply
    18,259.92x = 25,197.53 × 11,091.42
  4. Step 4: Simplify right side
    18,259.92x = 279,476,332.74
  5. Step 5: Solve for x
    x = 279,476,332.74/18,259.92
  6. Step 6: Final answer
    x = 15,305.45

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Half scale
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Double scale
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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.