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Finding the Fourth Proportional to 64,822.56, 88,871.76 and 63,641.64

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Solution

The fourth proportional to 64,822.56, 88,871.76 and 63,641.64 is: 87,252.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,822.56 : 88,871.76 = 63,641.64 : x
  2. Step 2: Convert to fraction form
    64,822.56/88,871.76 = 63,641.64/x
  3. Step 3: Cross multiply
    64,822.56x = 88,871.76 × 63,641.64
  4. Step 4: Simplify right side
    64,822.56x = 5,655,944,556.09
  5. Step 5: Solve for x
    x = 5,655,944,556.09/64,822.56
  6. Step 6: Final answer
    x = 87,252.72

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.