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Finding the Fourth Proportional to 185,580.66, 278,335.45 and 79,023.34

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Solution

The fourth proportional to 185,580.66, 278,335.45 and 79,023.34 is: 118,519.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,580.66 : 278,335.45 = 79,023.34 : x
  2. Step 2: Convert to fraction form
    185,580.66/278,335.45 = 79,023.34/x
  3. Step 3: Cross multiply
    185,580.66x = 278,335.45 × 79,023.34
  4. Step 4: Simplify right side
    185,580.66x = 21,994,997,346.10
  5. Step 5: Solve for x
    x = 21,994,997,346.10/185,580.66
  6. Step 6: Final answer
    x = 118,519.88

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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.