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Finding the Fourth Proportional to 74,307.97, 111,396.34 and 56,855.71

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Solution

The fourth proportional to 74,307.97, 111,396.34 and 56,855.71 is: 85,233.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,307.97 : 111,396.34 = 56,855.71 : x
  2. Step 2: Convert to fraction form
    74,307.97/111,396.34 = 56,855.71/x
  3. Step 3: Cross multiply
    74,307.97x = 111,396.34 × 56,855.71
  4. Step 4: Simplify right side
    74,307.97x = 6,333,517,933.93
  5. Step 5: Solve for x
    x = 6,333,517,933.93/74,307.97
  6. Step 6: Final answer
    x = 85,233.36

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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.