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Finding the Fourth Proportional to 52,899.80, 79,349.70 and 50,712.80

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Solution

The fourth proportional to 52,899.80, 79,349.70 and 50,712.80 is: 76,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,899.80 : 79,349.70 = 50,712.80 : x
  2. Step 2: Convert to fraction form
    52,899.80/79,349.70 = 50,712.80/x
  3. Step 3: Cross multiply
    52,899.80x = 79,349.70 × 50,712.80
  4. Step 4: Simplify right side
    52,899.80x = 4,024,045,466.16
  5. Step 5: Solve for x
    x = 4,024,045,466.16/52,899.80
  6. Step 6: Final answer
    x = 76,069.20

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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.