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Finding the Fourth Proportional to 22,393.67, 30,904.13 and 13,445.19

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Solution

The fourth proportional to 22,393.67, 30,904.13 and 13,445.19 is: 18,554.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,393.67 : 30,904.13 = 13,445.19 : x
  2. Step 2: Convert to fraction form
    22,393.67/30,904.13 = 13,445.19/x
  3. Step 3: Cross multiply
    22,393.67x = 30,904.13 × 13,445.19
  4. Step 4: Simplify right side
    22,393.67x = 415,511,933.25
  5. Step 5: Solve for x
    x = 415,511,933.25/22,393.67
  6. Step 6: Final answer
    x = 18,554.89

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Half scale
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Double scale
Find fourth proportional to 22,394.67, 30,905.51 and 13,446.19
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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.