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Finding the Fourth Proportional to 63,222.87, 87,259.79 and 40,590.45

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Solution

The fourth proportional to 63,222.87, 87,259.79 and 40,590.45 is: 56,022.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,222.87 : 87,259.79 = 40,590.45 : x
  2. Step 2: Convert to fraction form
    63,222.87/87,259.79 = 40,590.45/x
  3. Step 3: Cross multiply
    63,222.87x = 87,259.79 × 40,590.45
  4. Step 4: Simplify right side
    63,222.87x = 3,541,914,143.01
  5. Step 5: Solve for x
    x = 3,541,914,143.01/63,222.87
  6. Step 6: Final answer
    x = 56,022.67

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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.