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Finding the Fourth Proportional to 118,813.44, 163,962.49 and 71,078.01

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Solution

The fourth proportional to 118,813.44, 163,962.49 and 71,078.01 is: 98,087.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,813.44 : 163,962.49 = 71,078.01 : x
  2. Step 2: Convert to fraction form
    118,813.44/163,962.49 = 71,078.01/x
  3. Step 3: Cross multiply
    118,813.44x = 163,962.49 × 71,078.01
  4. Step 4: Simplify right side
    118,813.44x = 11,654,127,503.84
  5. Step 5: Solve for x
    x = 11,654,127,503.84/118,813.44
  6. Step 6: Final answer
    x = 98,087.62

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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.