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Finding the Fourth Proportional to 118,338.48, 163,307.16 and 68,034.48

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Solution

The fourth proportional to 118,338.48, 163,307.16 and 68,034.48 is: 93,887.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,338.48 : 163,307.16 = 68,034.48 : x
  2. Step 2: Convert to fraction form
    118,338.48/163,307.16 = 68,034.48/x
  3. Step 3: Cross multiply
    118,338.48x = 163,307.16 × 68,034.48
  4. Step 4: Simplify right side
    118,338.48x = 11,110,517,710.88
  5. Step 5: Solve for x
    x = 11,110,517,710.88/118,338.48
  6. Step 6: Final answer
    x = 93,887.62

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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.