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Finding the Fourth Proportional to 118,338.52, 163,328.25 and 69,938.47

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Solution

The fourth proportional to 118,338.52, 163,328.25 and 69,938.47 is: 96,527.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,338.52 : 163,328.25 = 69,938.47 : x
  2. Step 2: Convert to fraction form
    118,338.52/163,328.25 = 69,938.47/x
  3. Step 3: Cross multiply
    118,338.52x = 163,328.25 × 69,938.47
  4. Step 4: Simplify right side
    118,338.52x = 11,422,927,912.78
  5. Step 5: Solve for x
    x = 11,422,927,912.78/118,338.52
  6. Step 6: Final answer
    x = 96,527.55

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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.