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Finding the Fourth Proportional to 52,601.70, 78,902.55 and 40,851.30

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Solution

The fourth proportional to 52,601.70, 78,902.55 and 40,851.30 is: 61,276.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,601.70 : 78,902.55 = 40,851.30 : x
  2. Step 2: Convert to fraction form
    52,601.70/78,902.55 = 40,851.30/x
  3. Step 3: Cross multiply
    52,601.70x = 78,902.55 × 40,851.30
  4. Step 4: Simplify right side
    52,601.70x = 3,223,271,740.82
  5. Step 5: Solve for x
    x = 3,223,271,740.82/52,601.70
  6. Step 6: Final answer
    x = 61,276.95

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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.