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Finding the Fourth Proportional to 63,990.64, 88,306.86 and 35,696.32

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Solution

The fourth proportional to 63,990.64, 88,306.86 and 35,696.32 is: 49,260.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,990.64 : 88,306.86 = 35,696.32 : x
  2. Step 2: Convert to fraction form
    63,990.64/88,306.86 = 35,696.32/x
  3. Step 3: Cross multiply
    63,990.64x = 88,306.86 × 35,696.32
  4. Step 4: Simplify right side
    63,990.64x = 3,152,229,932.76
  5. Step 5: Solve for x
    x = 3,152,229,932.76/63,990.64
  6. Step 6: Final answer
    x = 49,260.80

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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.