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Finding the Fourth Proportional to 52,664.70, 78,843.45 and 47,135.10

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Solution

The fourth proportional to 52,664.70, 78,843.45 and 47,135.10 is: 70,565.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,664.70 : 78,843.45 = 47,135.10 : x
  2. Step 2: Convert to fraction form
    52,664.70/78,843.45 = 47,135.10/x
  3. Step 3: Cross multiply
    52,664.70x = 78,843.45 × 47,135.10
  4. Step 4: Simplify right side
    52,664.70x = 3,716,293,900.10
  5. Step 5: Solve for x
    x = 3,716,293,900.10/52,664.70
  6. Step 6: Final answer
    x = 70,565.18

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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.