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Finding the Fourth Proportional to 9,417.36, 12,997 and 5,439.76

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Solution

The fourth proportional to 9,417.36, 12,997 and 5,439.76 is: 7,507.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,417.36 : 12,997 = 5,439.76 : x
  2. Step 2: Convert to fraction form
    9,417.36/12,997 = 5,439.76/x
  3. Step 3: Cross multiply
    9,417.36x = 12,997 × 5,439.76
  4. Step 4: Simplify right side
    9,417.36x = 70,700,560.72
  5. Step 5: Solve for x
    x = 70,700,560.72/9,417.36
  6. Step 6: Final answer
    x = 7,507.47

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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.