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Finding the Fourth Proportional to 160,987.60, 241,711.80 and 91,003.60

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Solution

The fourth proportional to 160,987.60, 241,711.80 and 91,003.60 is: 136,635.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,987.60 : 241,711.80 = 91,003.60 : x
  2. Step 2: Convert to fraction form
    160,987.60/241,711.80 = 91,003.60/x
  3. Step 3: Cross multiply
    160,987.60x = 241,711.80 × 91,003.60
  4. Step 4: Simplify right side
    160,987.60x = 21,996,643,962.48
  5. Step 5: Solve for x
    x = 21,996,643,962.48/160,987.60
  6. Step 6: Final answer
    x = 136,635.64

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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.