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Finding the Fourth Proportional to 69,203.10, 103,631.85 and 45,702.30

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Solution

The fourth proportional to 69,203.10, 103,631.85 and 45,702.30 is: 68,439.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,203.10 : 103,631.85 = 45,702.30 : x
  2. Step 2: Convert to fraction form
    69,203.10/103,631.85 = 45,702.30/x
  3. Step 3: Cross multiply
    69,203.10x = 103,631.85 × 45,702.30
  4. Step 4: Simplify right side
    69,203.10x = 4,736,213,898.26
  5. Step 5: Solve for x
    x = 4,736,213,898.26/69,203.10
  6. Step 6: Final answer
    x = 68,439.33

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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.