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Finding the Fourth Proportional to 51,433.70, 70,985.04 and 28,773.95

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Solution

The fourth proportional to 51,433.70, 70,985.04 and 28,773.95 is: 39,711.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,433.70 : 70,985.04 = 28,773.95 : x
  2. Step 2: Convert to fraction form
    51,433.70/70,985.04 = 28,773.95/x
  3. Step 3: Cross multiply
    51,433.70x = 70,985.04 × 28,773.95
  4. Step 4: Simplify right side
    51,433.70x = 2,042,519,991.71
  5. Step 5: Solve for x
    x = 2,042,519,991.71/51,433.70
  6. Step 6: Final answer
    x = 39,711.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.