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Finding the Fourth Proportional to 118,054.79, 177,080.54 and 67,345.61

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Solution

The fourth proportional to 118,054.79, 177,080.54 and 67,345.61 is: 101,017.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,054.79 : 177,080.54 = 67,345.61 : x
  2. Step 2: Convert to fraction form
    118,054.79/177,080.54 = 67,345.61/x
  3. Step 3: Cross multiply
    118,054.79x = 177,080.54 × 67,345.61
  4. Step 4: Simplify right side
    118,054.79x = 11,925,595,763.30
  5. Step 5: Solve for x
    x = 11,925,595,763.30/118,054.79
  6. Step 6: Final answer
    x = 101,017.47

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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.