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Finding the Fourth Proportional to 85,297.62, 117,710.92 and 47,574.30

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Solution

The fourth proportional to 85,297.62, 117,710.92 and 47,574.30 is: 65,652.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,297.62 : 117,710.92 = 47,574.30 : x
  2. Step 2: Convert to fraction form
    85,297.62/117,710.92 = 47,574.30/x
  3. Step 3: Cross multiply
    85,297.62x = 117,710.92 × 47,574.30
  4. Step 4: Simplify right side
    85,297.62x = 5,600,014,621.36
  5. Step 5: Solve for x
    x = 5,600,014,621.36/85,297.62
  6. Step 6: Final answer
    x = 65,652.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.