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Finding the Fourth Proportional to 110,945.48, 153,080.64 and 65,625.96

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Solution

The fourth proportional to 110,945.48, 153,080.64 and 65,625.96 is: 90,549.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,945.48 : 153,080.64 = 65,625.96 : x
  2. Step 2: Convert to fraction form
    110,945.48/153,080.64 = 65,625.96/x
  3. Step 3: Cross multiply
    110,945.48x = 153,080.64 × 65,625.96
  4. Step 4: Simplify right side
    110,945.48x = 10,046,063,957.41
  5. Step 5: Solve for x
    x = 10,046,063,957.41/110,945.48
  6. Step 6: Final answer
    x = 90,549.56

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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.