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Finding the Fourth Proportional to 61,814.40, 92,728.85 and 19,679.73

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Solution

The fourth proportional to 61,814.40, 92,728.85 and 19,679.73 is: 29,521.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,814.40 : 92,728.85 = 19,679.73 : x
  2. Step 2: Convert to fraction form
    61,814.40/92,728.85 = 19,679.73/x
  3. Step 3: Cross multiply
    61,814.40x = 92,728.85 × 19,679.73
  4. Step 4: Simplify right side
    61,814.40x = 1,824,878,632.81
  5. Step 5: Solve for x
    x = 1,824,878,632.81/61,814.40
  6. Step 6: Final answer
    x = 29,521.90

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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.