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Finding the Fourth Proportional to 7,681.60, 10,600.20 and 4,324.48

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Solution

The fourth proportional to 7,681.60, 10,600.20 and 4,324.48 is: 5,967.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.60 : 10,600.20 = 4,324.48 : x
  2. Step 2: Convert to fraction form
    7,681.60/10,600.20 = 4,324.48/x
  3. Step 3: Cross multiply
    7,681.60x = 10,600.20 × 4,324.48
  4. Step 4: Simplify right side
    7,681.60x = 45,840,352.90
  5. Step 5: Solve for x
    x = 45,840,352.90/7,681.60
  6. Step 6: Final answer
    x = 5,967.55

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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.