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Finding the Fourth Proportional to 13,699.92, 18,873.09 and 13,032.90

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Solution

The fourth proportional to 13,699.92, 18,873.09 and 13,032.90 is: 17,954.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.92 : 18,873.09 = 13,032.90 : x
  2. Step 2: Convert to fraction form
    13,699.92/18,873.09 = 13,032.90/x
  3. Step 3: Cross multiply
    13,699.92x = 18,873.09 × 13,032.90
  4. Step 4: Simplify right side
    13,699.92x = 245,971,094.66
  5. Step 5: Solve for x
    x = 245,971,094.66/13,699.92
  6. Step 6: Final answer
    x = 17,954.20

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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.