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Finding the Fourth Proportional to 118,358.96, 163,336.60 and 64,645.52

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Solution

The fourth proportional to 118,358.96, 163,336.60 and 64,645.52 is: 89,211.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,358.96 : 163,336.60 = 64,645.52 : x
  2. Step 2: Convert to fraction form
    118,358.96/163,336.60 = 64,645.52/x
  3. Step 3: Cross multiply
    118,358.96x = 163,336.60 × 64,645.52
  4. Step 4: Simplify right side
    118,358.96x = 10,558,979,442.03
  5. Step 5: Solve for x
    x = 10,558,979,442.03/118,358.96
  6. Step 6: Final answer
    x = 89,211.49

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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.