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Finding the Fourth Proportional to 70,999.47, 106,443.09 and 35,442.54

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Solution

The fourth proportional to 70,999.47, 106,443.09 and 35,442.54 is: 53,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,999.47 : 106,443.09 = 35,442.54 : x
  2. Step 2: Convert to fraction form
    70,999.47/106,443.09 = 35,442.54/x
  3. Step 3: Cross multiply
    70,999.47x = 106,443.09 × 35,442.54
  4. Step 4: Simplify right side
    70,999.47x = 3,772,613,475.05
  5. Step 5: Solve for x
    x = 3,772,613,475.05/70,999.47
  6. Step 6: Final answer
    x = 53,135.80

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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.