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Finding the Fourth Proportional to 5,352.70, 7,479.20 and 5,352.70

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Solution

The fourth proportional to 5,352.70, 7,479.20 and 5,352.70 is: 7,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,352.70 : 7,479.20 = 5,352.70 : x
  2. Step 2: Convert to fraction form
    5,352.70/7,479.20 = 5,352.70/x
  3. Step 3: Cross multiply
    5,352.70x = 7,479.20 × 5,352.70
  4. Step 4: Simplify right side
    5,352.70x = 40,033,913.84
  5. Step 5: Solve for x
    x = 40,033,913.84/5,352.70
  6. Step 6: Final answer
    x = 7,479.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.