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Finding the Fourth Proportional to 5,325.60, 7,981.20 and 4,353.60

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Solution

The fourth proportional to 5,325.60, 7,981.20 and 4,353.60 is: 6,524.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,325.60 : 7,981.20 = 4,353.60 : x
  2. Step 2: Convert to fraction form
    5,325.60/7,981.20 = 4,353.60/x
  3. Step 3: Cross multiply
    5,325.60x = 7,981.20 × 4,353.60
  4. Step 4: Simplify right side
    5,325.60x = 34,746,952.32
  5. Step 5: Solve for x
    x = 34,746,952.32/5,325.60
  6. Step 6: Final answer
    x = 6,524.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.