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Finding the Fourth Proportional to 118,555.60, 177,842.72 and 39,670.12

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Solution

The fourth proportional to 118,555.60, 177,842.72 and 39,670.12 is: 59,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,555.60 : 177,842.72 = 39,670.12 : x
  2. Step 2: Convert to fraction form
    118,555.60/177,842.72 = 39,670.12/x
  3. Step 3: Cross multiply
    118,555.60x = 177,842.72 × 39,670.12
  4. Step 4: Simplify right side
    118,555.60x = 7,055,042,043.53
  5. Step 5: Solve for x
    x = 7,055,042,043.53/118,555.60
  6. Step 6: Final answer
    x = 59,508.30

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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.