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Finding the Fourth Proportional to 9,472, 13,071.36 and 5,280.52

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Solution

The fourth proportional to 9,472, 13,071.36 and 5,280.52 is: 7,287.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,472 : 13,071.36 = 5,280.52 : x
  2. Step 2: Convert to fraction form
    9,472/13,071.36 = 5,280.52/x
  3. Step 3: Cross multiply
    9,472x = 13,071.36 × 5,280.52
  4. Step 4: Simplify right side
    9,472x = 69,023,577.91
  5. Step 5: Solve for x
    x = 69,023,577.91/9,472
  6. Step 6: Final answer
    x = 7,287.12

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Why These Related Problems?

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