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Finding the Fourth Proportional to 100,587.73, 150,914.36 and 47,990.41

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Solution

The fourth proportional to 100,587.73, 150,914.36 and 47,990.41 is: 72,001.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,587.73 : 150,914.36 = 47,990.41 : x
  2. Step 2: Convert to fraction form
    100,587.73/150,914.36 = 47,990.41/x
  3. Step 3: Cross multiply
    100,587.73x = 150,914.36 × 47,990.41
  4. Step 4: Simplify right side
    100,587.73x = 7,242,442,011.29
  5. Step 5: Solve for x
    x = 7,242,442,011.29/100,587.73
  6. Step 6: Final answer
    x = 72,001.25

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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.