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Finding the Fourth Proportional to 70,458.78, 105,617.08 and 44,181.96

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Solution

The fourth proportional to 70,458.78, 105,617.08 and 44,181.96 is: 66,228.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,458.78 : 105,617.08 = 44,181.96 : x
  2. Step 2: Convert to fraction form
    70,458.78/105,617.08 = 44,181.96/x
  3. Step 3: Cross multiply
    70,458.78x = 105,617.08 × 44,181.96
  4. Step 4: Simplify right side
    70,458.78x = 4,666,369,603.88
  5. Step 5: Solve for x
    x = 4,666,369,603.88/70,458.78
  6. Step 6: Final answer
    x = 66,228.36

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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.