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Finding the Fourth Proportional to 7,401.76, 10,214.64 and 4,044.76

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Solution

The fourth proportional to 7,401.76, 10,214.64 and 4,044.76 is: 5,581.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,401.76 : 10,214.64 = 4,044.76 : x
  2. Step 2: Convert to fraction form
    7,401.76/10,214.64 = 4,044.76/x
  3. Step 3: Cross multiply
    7,401.76x = 10,214.64 × 4,044.76
  4. Step 4: Simplify right side
    7,401.76x = 41,315,767.29
  5. Step 5: Solve for x
    x = 41,315,767.29/7,401.76
  6. Step 6: Final answer
    x = 5,581.88

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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.