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Finding the Fourth Proportional to 118,785.60, 163,924.08 and 65,072.52

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Solution

The fourth proportional to 118,785.60, 163,924.08 and 65,072.52 is: 89,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,785.60 : 163,924.08 = 65,072.52 : x
  2. Step 2: Convert to fraction form
    118,785.60/163,924.08 = 65,072.52/x
  3. Step 3: Cross multiply
    118,785.60x = 163,924.08 × 65,072.52
  4. Step 4: Simplify right side
    118,785.60x = 10,666,952,974.28
  5. Step 5: Solve for x
    x = 10,666,952,974.28/118,785.60
  6. Step 6: Final answer
    x = 89,800.05

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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.