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Finding the Fourth Proportional to 11,298.68, 15,588.76 and 7,324.48

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Solution

The fourth proportional to 11,298.68, 15,588.76 and 7,324.48 is: 10,105.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,298.68 : 15,588.76 = 7,324.48 : x
  2. Step 2: Convert to fraction form
    11,298.68/15,588.76 = 7,324.48/x
  3. Step 3: Cross multiply
    11,298.68x = 15,588.76 × 7,324.48
  4. Step 4: Simplify right side
    11,298.68x = 114,179,560.84
  5. Step 5: Solve for x
    x = 114,179,560.84/11,298.68
  6. Step 6: Final answer
    x = 10,105.57

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Half scale
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Double scale
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Similar ratio
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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.