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Finding the Fourth Proportional to 7,486.80, 10,326.20 and 5,496.72

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Solution

The fourth proportional to 7,486.80, 10,326.20 and 5,496.72 is: 7,581.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.80 : 10,326.20 = 5,496.72 : x
  2. Step 2: Convert to fraction form
    7,486.80/10,326.20 = 5,496.72/x
  3. Step 3: Cross multiply
    7,486.80x = 10,326.20 × 5,496.72
  4. Step 4: Simplify right side
    7,486.80x = 56,760,230.06
  5. Step 5: Solve for x
    x = 56,760,230.06/7,486.80
  6. Step 6: Final answer
    x = 7,581.37

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Half 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.