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Finding the Fourth Proportional to 9,372.42, 12,934.80 and 7,130.88

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Solution

The fourth proportional to 9,372.42, 12,934.80 and 7,130.88 is: 9,841.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,372.42 : 12,934.80 = 7,130.88 : x
  2. Step 2: Convert to fraction form
    9,372.42/12,934.80 = 7,130.88/x
  3. Step 3: Cross multiply
    9,372.42x = 12,934.80 × 7,130.88
  4. Step 4: Simplify right side
    9,372.42x = 92,236,506.62
  5. Step 5: Solve for x
    x = 92,236,506.62/9,372.42
  6. Step 6: Final answer
    x = 9,841.27

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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.