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Finding the Fourth Proportional to 107,412.20, 161,118.30 and 107,412.20

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Solution

The fourth proportional to 107,412.20, 161,118.30 and 107,412.20 is: 161,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,412.20 : 161,118.30 = 107,412.20 : x
  2. Step 2: Convert to fraction form
    107,412.20/161,118.30 = 107,412.20/x
  3. Step 3: Cross multiply
    107,412.20x = 161,118.30 × 107,412.20
  4. Step 4: Simplify right side
    107,412.20x = 17,306,071,063.26
  5. Step 5: Solve for x
    x = 17,306,071,063.26/107,412.20
  6. Step 6: Final answer
    x = 161,118.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.