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Finding the Fourth Proportional to 64,545.64, 89,072.77 and 35,865.18

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Solution

The fourth proportional to 64,545.64, 89,072.77 and 35,865.18 is: 49,493.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,545.64 : 89,072.77 = 35,865.18 : x
  2. Step 2: Convert to fraction form
    64,545.64/89,072.77 = 35,865.18/x
  3. Step 3: Cross multiply
    64,545.64x = 89,072.77 × 35,865.18
  4. Step 4: Simplify right side
    64,545.64x = 3,194,610,929.15
  5. Step 5: Solve for x
    x = 3,194,610,929.15/64,545.64
  6. Step 6: Final answer
    x = 49,493.83

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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.