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Finding the Fourth Proportional to 52,800.90, 79,004.49 and 52,210.41

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Solution

The fourth proportional to 52,800.90, 79,004.49 and 52,210.41 is: 78,120.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,800.90 : 79,004.49 = 52,210.41 : x
  2. Step 2: Convert to fraction form
    52,800.90/79,004.49 = 52,210.41/x
  3. Step 3: Cross multiply
    52,800.90x = 79,004.49 × 52,210.41
  4. Step 4: Simplify right side
    52,800.90x = 4,124,856,814.74
  5. Step 5: Solve for x
    x = 4,124,856,814.74/52,800.90
  6. Step 6: Final answer
    x = 78,120.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.