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Finding the Fourth Proportional to 12,661.48, 17,473.27 and 7,948.36

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Solution

The fourth proportional to 12,661.48, 17,473.27 and 7,948.36 is: 10,969.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.48 : 17,473.27 = 7,948.36 : x
  2. Step 2: Convert to fraction form
    12,661.48/17,473.27 = 7,948.36/x
  3. Step 3: Cross multiply
    12,661.48x = 17,473.27 × 7,948.36
  4. Step 4: Simplify right side
    12,661.48x = 138,883,752.97
  5. Step 5: Solve for x
    x = 138,883,752.97/12,661.48
  6. Step 6: Final answer
    x = 10,969.00

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1.5x scale

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.