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Finding the Fourth Proportional to 92,821.55, 139,252.57 and 52,859.42

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Solution

The fourth proportional to 92,821.55, 139,252.57 and 52,859.42 is: 79,300.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,821.55 : 139,252.57 = 52,859.42 : x
  2. Step 2: Convert to fraction form
    92,821.55/139,252.57 = 52,859.42/x
  3. Step 3: Cross multiply
    92,821.55x = 139,252.57 × 52,859.42
  4. Step 4: Simplify right side
    92,821.55x = 7,360,809,255.30
  5. Step 5: Solve for x
    x = 7,360,809,255.30/92,821.55
  6. Step 6: Final answer
    x = 79,300.65

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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.