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Finding the Fourth Proportional to 118,808.67, 163,955.95 and 71,073.25

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Solution

The fourth proportional to 118,808.67, 163,955.95 and 71,073.25 is: 98,081.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,808.67 : 163,955.95 = 71,073.25 : x
  2. Step 2: Convert to fraction form
    118,808.67/163,955.95 = 71,073.25/x
  3. Step 3: Cross multiply
    118,808.67x = 163,955.95 × 71,073.25
  4. Step 4: Simplify right side
    118,808.67x = 11,652,881,635.76
  5. Step 5: Solve for x
    x = 11,652,881,635.76/118,808.67
  6. Step 6: Final answer
    x = 98,081.07

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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.