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Finding the Fourth Proportional to 7,572.96, 11,361.06 and 4,287.60

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Solution

The fourth proportional to 7,572.96, 11,361.06 and 4,287.60 is: 6,432.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,572.96 : 11,361.06 = 4,287.60 : x
  2. Step 2: Convert to fraction form
    7,572.96/11,361.06 = 4,287.60/x
  3. Step 3: Cross multiply
    7,572.96x = 11,361.06 × 4,287.60
  4. Step 4: Simplify right side
    7,572.96x = 48,711,680.86
  5. Step 5: Solve for x
    x = 48,711,680.86/7,572.96
  6. Step 6: Final answer
    x = 6,432.32

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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.