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Finding the Fourth Proportional to 70,629.64, 105,995.76 and 26,262.88

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Solution

The fourth proportional to 70,629.64, 105,995.76 and 26,262.88 is: 39,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,629.64 : 105,995.76 = 26,262.88 : x
  2. Step 2: Convert to fraction form
    70,629.64/105,995.76 = 26,262.88/x
  3. Step 3: Cross multiply
    70,629.64x = 105,995.76 × 26,262.88
  4. Step 4: Simplify right side
    70,629.64x = 2,783,753,925.39
  5. Step 5: Solve for x
    x = 2,783,753,925.39/70,629.64
  6. Step 6: Final answer
    x = 39,413.40

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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.