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Finding the Fourth Proportional to 64,405.84, 88,885.60 and 36,116.96

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Solution

The fourth proportional to 64,405.84, 88,885.60 and 36,116.96 is: 49,844.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,405.84 : 88,885.60 = 36,116.96 : x
  2. Step 2: Convert to fraction form
    64,405.84/88,885.60 = 36,116.96/x
  3. Step 3: Cross multiply
    64,405.84x = 88,885.60 × 36,116.96
  4. Step 4: Simplify right side
    64,405.84x = 3,210,277,659.78
  5. Step 5: Solve for x
    x = 3,210,277,659.78/64,405.84
  6. Step 6: Final answer
    x = 49,844.51

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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.