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Finding the Fourth Proportional to 107,809.80, 161,743.86 and 61,095.48

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Solution

The fourth proportional to 107,809.80, 161,743.86 and 61,095.48 is: 91,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,809.80 : 161,743.86 = 61,095.48 : x
  2. Step 2: Convert to fraction form
    107,809.80/161,743.86 = 61,095.48/x
  3. Step 3: Cross multiply
    107,809.80x = 161,743.86 × 61,095.48
  4. Step 4: Simplify right side
    107,809.80x = 9,881,818,763.75
  5. Step 5: Solve for x
    x = 9,881,818,763.75/107,809.80
  6. Step 6: Final answer
    x = 91,659.74

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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.