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Finding the Fourth Proportional to 161,690.92, 242,477.26 and 61,801.72

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Solution

The fourth proportional to 161,690.92, 242,477.26 and 61,801.72 is: 92,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,690.92 : 242,477.26 = 61,801.72 : x
  2. Step 2: Convert to fraction form
    161,690.92/242,477.26 = 61,801.72/x
  3. Step 3: Cross multiply
    161,690.92x = 242,477.26 × 61,801.72
  4. Step 4: Simplify right side
    161,690.92x = 14,985,511,728.89
  5. Step 5: Solve for x
    x = 14,985,511,728.89/161,690.92
  6. Step 6: Final answer
    x = 92,679.98

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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.