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Finding the Fourth Proportional to 86,817.50, 119,808.87 and 47,073.50

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Solution

The fourth proportional to 86,817.50, 119,808.87 and 47,073.50 is: 64,961.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,817.50 : 119,808.87 = 47,073.50 : x
  2. Step 2: Convert to fraction form
    86,817.50/119,808.87 = 47,073.50/x
  3. Step 3: Cross multiply
    86,817.50x = 119,808.87 × 47,073.50
  4. Step 4: Simplify right side
    86,817.50x = 5,639,822,841.95
  5. Step 5: Solve for x
    x = 5,639,822,841.95/86,817.50
  6. Step 6: Final answer
    x = 64,961.82

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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.