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Finding the Fourth Proportional to 161,637.80, 223,120.02 and 138,885.80

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Solution

The fourth proportional to 161,637.80, 223,120.02 and 138,885.80 is: 191,713.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,637.80 : 223,120.02 = 138,885.80 : x
  2. Step 2: Convert to fraction form
    161,637.80/223,120.02 = 138,885.80/x
  3. Step 3: Cross multiply
    161,637.80x = 223,120.02 × 138,885.80
  4. Step 4: Simplify right side
    161,637.80x = 30,988,202,473.72
  5. Step 5: Solve for x
    x = 30,988,202,473.72/161,637.80
  6. Step 6: Final answer
    x = 191,713.83

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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.