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Finding the Fourth Proportional to 118,767.80, 163,899.58 and 65,054.73

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Solution

The fourth proportional to 118,767.80, 163,899.58 and 65,054.73 is: 89,775.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,767.80 : 163,899.58 = 65,054.73 : x
  2. Step 2: Convert to fraction form
    118,767.80/163,899.58 = 65,054.73/x
  3. Step 3: Cross multiply
    118,767.80x = 163,899.58 × 65,054.73
  4. Step 4: Simplify right side
    118,767.80x = 10,662,442,924.01
  5. Step 5: Solve for x
    x = 10,662,442,924.01/118,767.80
  6. Step 6: Final answer
    x = 89,775.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.