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Finding the Fourth Proportional to 9,421.28, 12,994.02 and 6,587.72

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Solution

The fourth proportional to 9,421.28, 12,994.02 and 6,587.72 is: 9,085.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.28 : 12,994.02 = 6,587.72 : x
  2. Step 2: Convert to fraction form
    9,421.28/12,994.02 = 6,587.72/x
  3. Step 3: Cross multiply
    9,421.28x = 12,994.02 × 6,587.72
  4. Step 4: Simplify right side
    9,421.28x = 85,600,965.43
  5. Step 5: Solve for x
    x = 85,600,965.43/9,421.28
  6. Step 6: Final answer
    x = 9,085.92

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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.