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Finding the Fourth Proportional to 6,572.40, 9,868.20 and 5,113.20

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Solution

The fourth proportional to 6,572.40, 9,868.20 and 5,113.20 is: 7,677.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,572.40 : 9,868.20 = 5,113.20 : x
  2. Step 2: Convert to fraction form
    6,572.40/9,868.20 = 5,113.20/x
  3. Step 3: Cross multiply
    6,572.40x = 9,868.20 × 5,113.20
  4. Step 4: Simplify right side
    6,572.40x = 50,458,080.24
  5. Step 5: Solve for x
    x = 50,458,080.24/6,572.40
  6. Step 6: Final answer
    x = 7,677.27

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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.