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Finding the Fourth Proportional to 161,712.48, 242,605.64 and 49,408.68

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Solution

The fourth proportional to 161,712.48, 242,605.64 and 49,408.68 is: 74,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,712.48 : 242,605.64 = 49,408.68 : x
  2. Step 2: Convert to fraction form
    161,712.48/242,605.64 = 49,408.68/x
  3. Step 3: Cross multiply
    161,712.48x = 242,605.64 × 49,408.68
  4. Step 4: Simplify right side
    161,712.48x = 11,986,824,432.96
  5. Step 5: Solve for x
    x = 11,986,824,432.96/161,712.48
  6. Step 6: Final answer
    x = 74,124.30

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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.