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Finding the Fourth Proportional to 117,725, 176,413.80 and 69,643.88

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Solution

The fourth proportional to 117,725, 176,413.80 and 69,643.88 is: 104,363.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,725 : 176,413.80 = 69,643.88 : x
  2. Step 2: Convert to fraction form
    117,725/176,413.80 = 69,643.88/x
  3. Step 3: Cross multiply
    117,725x = 176,413.80 × 69,643.88
  4. Step 4: Simplify right side
    117,725x = 12,286,141,517.54
  5. Step 5: Solve for x
    x = 12,286,141,517.54/117,725
  6. Step 6: Final answer
    x = 104,363.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.