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Finding the Fourth Proportional to 118,173.54, 163,081.40 and 64,458.54

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Solution

The fourth proportional to 118,173.54, 163,081.40 and 64,458.54 is: 88,953.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,173.54 : 163,081.40 = 64,458.54 : x
  2. Step 2: Convert to fraction form
    118,173.54/163,081.40 = 64,458.54/x
  3. Step 3: Cross multiply
    118,173.54x = 163,081.40 × 64,458.54
  4. Step 4: Simplify right side
    118,173.54x = 10,511,988,945.16
  5. Step 5: Solve for x
    x = 10,511,988,945.16/118,173.54
  6. Step 6: Final answer
    x = 88,953.83

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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.