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Finding the Fourth Proportional to 52,551, 72,520.42 and 39,133.80

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Solution

The fourth proportional to 52,551, 72,520.42 and 39,133.80 is: 54,004.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,551 : 72,520.42 = 39,133.80 : x
  2. Step 2: Convert to fraction form
    52,551/72,520.42 = 39,133.80/x
  3. Step 3: Cross multiply
    52,551x = 72,520.42 × 39,133.80
  4. Step 4: Simplify right side
    52,551x = 2,837,999,612.20
  5. Step 5: Solve for x
    x = 2,837,999,612.20/52,551
  6. Step 6: Final answer
    x = 54,004.67

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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.