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Finding the Fourth Proportional to 108,039.52, 162,076.56 and 45,710.56

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Solution

The fourth proportional to 108,039.52, 162,076.56 and 45,710.56 is: 68,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,039.52 : 162,076.56 = 45,710.56 : x
  2. Step 2: Convert to fraction form
    108,039.52/162,076.56 = 45,710.56/x
  3. Step 3: Cross multiply
    108,039.52x = 162,076.56 × 45,710.56
  4. Step 4: Simplify right side
    108,039.52x = 7,408,610,320.47
  5. Step 5: Solve for x
    x = 7,408,610,320.47/108,039.52
  6. Step 6: Final answer
    x = 68,573.15

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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.