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Finding the Fourth Proportional to 173,778.60, 260,765.10 and 73,921.80

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Solution

The fourth proportional to 173,778.60, 260,765.10 and 73,921.80 is: 110,924.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,778.60 : 260,765.10 = 73,921.80 : x
  2. Step 2: Convert to fraction form
    173,778.60/260,765.10 = 73,921.80/x
  3. Step 3: Cross multiply
    173,778.60x = 260,765.10 × 73,921.80
  4. Step 4: Simplify right side
    173,778.60x = 19,276,225,569.18
  5. Step 5: Solve for x
    x = 19,276,225,569.18/173,778.60
  6. Step 6: Final answer
    x = 110,924.05

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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.