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Finding the Fourth Proportional to 70,657.79, 105,993.63 and 26,274.11

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Solution

The fourth proportional to 70,657.79, 105,993.63 and 26,274.11 is: 39,413.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,657.79 : 105,993.63 = 26,274.11 : x
  2. Step 2: Convert to fraction form
    70,657.79/105,993.63 = 26,274.11/x
  3. Step 3: Cross multiply
    70,657.79x = 105,993.63 × 26,274.11
  4. Step 4: Simplify right side
    70,657.79x = 2,784,887,763.95
  5. Step 5: Solve for x
    x = 2,784,887,763.95/70,657.79
  6. Step 6: Final answer
    x = 39,413.74

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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.