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Finding the Fourth Proportional to 70,115.09, 105,085.13 and 35,064.77

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Solution

The fourth proportional to 70,115.09, 105,085.13 and 35,064.77 is: 52,553.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,115.09 : 105,085.13 = 35,064.77 : x
  2. Step 2: Convert to fraction form
    70,115.09/105,085.13 = 35,064.77/x
  3. Step 3: Cross multiply
    70,115.09x = 105,085.13 × 35,064.77
  4. Step 4: Simplify right side
    70,115.09x = 3,684,785,213.12
  5. Step 5: Solve for x
    x = 3,684,785,213.12/70,115.09
  6. Step 6: Final answer
    x = 52,553.39

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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.