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Finding the Fourth Proportional to 124,820.80, 187,231.20 and 96,827.20

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Solution

The fourth proportional to 124,820.80, 187,231.20 and 96,827.20 is: 145,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,820.80 : 187,231.20 = 96,827.20 : x
  2. Step 2: Convert to fraction form
    124,820.80/187,231.20 = 96,827.20/x
  3. Step 3: Cross multiply
    124,820.80x = 187,231.20 × 96,827.20
  4. Step 4: Simplify right side
    124,820.80x = 18,129,072,848.64
  5. Step 5: Solve for x
    x = 18,129,072,848.64/124,820.80
  6. Step 6: Final answer
    x = 145,240.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.