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Finding the Fourth Proportional to 161,718.60, 242,462.70 and 61,840.20

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Solution

The fourth proportional to 161,718.60, 242,462.70 and 61,840.20 is: 92,716.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,718.60 : 242,462.70 = 61,840.20 : x
  2. Step 2: Convert to fraction form
    161,718.60/242,462.70 = 61,840.20/x
  3. Step 3: Cross multiply
    161,718.60x = 242,462.70 × 61,840.20
  4. Step 4: Simplify right side
    161,718.60x = 14,993,941,860.54
  5. Step 5: Solve for x
    x = 14,993,941,860.54/161,718.60
  6. Step 6: Final answer
    x = 92,716.25

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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.