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Finding the Fourth Proportional to 48,489.36, 66,918.06 and 32,328.78

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Solution

The fourth proportional to 48,489.36, 66,918.06 and 32,328.78 is: 44,615.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,489.36 : 66,918.06 = 32,328.78 : x
  2. Step 2: Convert to fraction form
    48,489.36/66,918.06 = 32,328.78/x
  3. Step 3: Cross multiply
    48,489.36x = 66,918.06 × 32,328.78
  4. Step 4: Simplify right side
    48,489.36x = 2,163,379,239.77
  5. Step 5: Solve for x
    x = 2,163,379,239.77/48,489.36
  6. Step 6: Final answer
    x = 44,615.55

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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.