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Finding the Fourth Proportional to 118,321.48, 163,283.70 and 68,017.48

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Solution

The fourth proportional to 118,321.48, 163,283.70 and 68,017.48 is: 93,864.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,321.48 : 163,283.70 = 68,017.48 : x
  2. Step 2: Convert to fraction form
    118,321.48/163,283.70 = 68,017.48/x
  3. Step 3: Cross multiply
    118,321.48x = 163,283.70 × 68,017.48
  4. Step 4: Simplify right side
    118,321.48x = 11,106,145,799.08
  5. Step 5: Solve for x
    x = 11,106,145,799.08/118,321.48
  6. Step 6: Final answer
    x = 93,864.16

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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.