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Finding the Fourth Proportional to 63,649.66, 87,860.20 and 54,661.10

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Solution

The fourth proportional to 63,649.66, 87,860.20 and 54,661.10 is: 75,452.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,649.66 : 87,860.20 = 54,661.10 : x
  2. Step 2: Convert to fraction form
    63,649.66/87,860.20 = 54,661.10/x
  3. Step 3: Cross multiply
    63,649.66x = 87,860.20 × 54,661.10
  4. Step 4: Simplify right side
    63,649.66x = 4,802,535,178.22
  5. Step 5: Solve for x
    x = 4,802,535,178.22/63,649.66
  6. Step 6: Final answer
    x = 75,452.64

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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.