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Finding the Fourth Proportional to 158,499.91, 237,671.97 and 78,445.18

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Solution

The fourth proportional to 158,499.91, 237,671.97 and 78,445.18 is: 117,629.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,499.91 : 237,671.97 = 78,445.18 : x
  2. Step 2: Convert to fraction form
    158,499.91/237,671.97 = 78,445.18/x
  3. Step 3: Cross multiply
    158,499.91x = 237,671.97 × 78,445.18
  4. Step 4: Simplify right side
    158,499.91x = 18,644,220,467.60
  5. Step 5: Solve for x
    x = 18,644,220,467.60/158,499.91
  6. Step 6: Final answer
    x = 117,629.22

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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.