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Finding the Fourth Proportional to 8,719.32, 12,032.67 and 4,740.42

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Solution

The fourth proportional to 8,719.32, 12,032.67 and 4,740.42 is: 6,541.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.32 : 12,032.67 = 4,740.42 : x
  2. Step 2: Convert to fraction form
    8,719.32/12,032.67 = 4,740.42/x
  3. Step 3: Cross multiply
    8,719.32x = 12,032.67 × 4,740.42
  4. Step 4: Simplify right side
    8,719.32x = 57,039,909.52
  5. Step 5: Solve for x
    x = 57,039,909.52/8,719.32
  6. Step 6: Final answer
    x = 6,541.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.