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Finding the Fourth Proportional to 5,363.40, 7,401.42 and 3,005.76

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Solution

The fourth proportional to 5,363.40, 7,401.42 and 3,005.76 is: 4,147.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,363.40 : 7,401.42 = 3,005.76 : x
  2. Step 2: Convert to fraction form
    5,363.40/7,401.42 = 3,005.76/x
  3. Step 3: Cross multiply
    5,363.40x = 7,401.42 × 3,005.76
  4. Step 4: Simplify right side
    5,363.40x = 22,246,892.18
  5. Step 5: Solve for x
    x = 22,246,892.18/5,363.40
  6. Step 6: Final answer
    x = 4,147.91

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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.