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Finding the Fourth Proportional to 134,648.60, 185,806.61 and 74,215.92

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Solution

The fourth proportional to 134,648.60, 185,806.61 and 74,215.92 is: 102,413.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,648.60 : 185,806.61 = 74,215.92 : x
  2. Step 2: Convert to fraction form
    134,648.60/185,806.61 = 74,215.92/x
  3. Step 3: Cross multiply
    134,648.60x = 185,806.61 × 74,215.92
  4. Step 4: Simplify right side
    134,648.60x = 13,789,808,503.23
  5. Step 5: Solve for x
    x = 13,789,808,503.23/134,648.60
  6. Step 6: Final answer
    x = 102,413.31

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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.