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Finding the Fourth Proportional to 87,273, 120,436.74 and 47,529

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Solution

The fourth proportional to 87,273, 120,436.74 and 47,529 is: 65,590.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,273 : 120,436.74 = 47,529 : x
  2. Step 2: Convert to fraction form
    87,273/120,436.74 = 47,529/x
  3. Step 3: Cross multiply
    87,273x = 120,436.74 × 47,529
  4. Step 4: Simplify right side
    87,273x = 5,724,237,815.46
  5. Step 5: Solve for x
    x = 5,724,237,815.46/87,273
  6. Step 6: Final answer
    x = 65,590.02

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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.