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Finding the Fourth Proportional to 12,445.84, 17,197.11 and 9,948.56

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Solution

The fourth proportional to 12,445.84, 17,197.11 and 9,948.56 is: 13,746.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.84 : 17,197.11 = 9,948.56 : x
  2. Step 2: Convert to fraction form
    12,445.84/17,197.11 = 9,948.56/x
  3. Step 3: Cross multiply
    12,445.84x = 17,197.11 × 9,948.56
  4. Step 4: Simplify right side
    12,445.84x = 171,086,480.66
  5. Step 5: Solve for x
    x = 171,086,480.66/12,445.84
  6. Step 6: Final answer
    x = 13,746.48

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Double scale
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Similar ratio
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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.