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Finding the Fourth Proportional to 12,386.25, 17,092.71 and 7,281.72

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Solution

The fourth proportional to 12,386.25, 17,092.71 and 7,281.72 is: 10,048.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.25 : 17,092.71 = 7,281.72 : x
  2. Step 2: Convert to fraction form
    12,386.25/17,092.71 = 7,281.72/x
  3. Step 3: Cross multiply
    12,386.25x = 17,092.71 × 7,281.72
  4. Step 4: Simplify right side
    12,386.25x = 124,464,328.26
  5. Step 5: Solve for x
    x = 124,464,328.26/12,386.25
  6. Step 6: Final answer
    x = 10,048.59

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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.