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Finding the Fourth Proportional to 100,960.80, 151,441.20 and 93,357.60

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Solution

The fourth proportional to 100,960.80, 151,441.20 and 93,357.60 is: 140,036.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,960.80 : 151,441.20 = 93,357.60 : x
  2. Step 2: Convert to fraction form
    100,960.80/151,441.20 = 93,357.60/x
  3. Step 3: Cross multiply
    100,960.80x = 151,441.20 × 93,357.60
  4. Step 4: Simplify right side
    100,960.80x = 14,138,186,973.12
  5. Step 5: Solve for x
    x = 14,138,186,973.12/100,960.80
  6. Step 6: Final answer
    x = 140,036.40

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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.