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Finding the Fourth Proportional to 64,072.48, 88,415.76 and 35,772.64

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Solution

The fourth proportional to 64,072.48, 88,415.76 and 35,772.64 is: 49,363.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,072.48 : 88,415.76 = 35,772.64 : x
  2. Step 2: Convert to fraction form
    64,072.48/88,415.76 = 35,772.64/x
  3. Step 3: Cross multiply
    64,072.48x = 88,415.76 × 35,772.64
  4. Step 4: Simplify right side
    64,072.48x = 3,162,865,152.81
  5. Step 5: Solve for x
    x = 3,162,865,152.81/64,072.48
  6. Step 6: Final answer
    x = 49,363.86

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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.