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Finding the Fourth Proportional to 118,705.48, 177,935.14 and 74,230.12

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Solution

The fourth proportional to 118,705.48, 177,935.14 and 74,230.12 is: 111,268.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,705.48 : 177,935.14 = 74,230.12 : x
  2. Step 2: Convert to fraction form
    118,705.48/177,935.14 = 74,230.12/x
  3. Step 3: Cross multiply
    118,705.48x = 177,935.14 × 74,230.12
  4. Step 4: Simplify right side
    118,705.48x = 13,208,146,794.42
  5. Step 5: Solve for x
    x = 13,208,146,794.42/118,705.48
  6. Step 6: Final answer
    x = 111,268.21

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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.