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Finding the Fourth Proportional to 40,702.59, 61,062.62 and 12,622.04

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Solution

The fourth proportional to 40,702.59, 61,062.62 and 12,622.04 is: 18,935.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,702.59 : 61,062.62 = 12,622.04 : x
  2. Step 2: Convert to fraction form
    40,702.59/61,062.62 = 12,622.04/x
  3. Step 3: Cross multiply
    40,702.59x = 61,062.62 × 12,622.04
  4. Step 4: Simplify right side
    40,702.59x = 770,734,832.14
  5. Step 5: Solve for x
    x = 770,734,832.14/40,702.59
  6. Step 6: Final answer
    x = 18,935.77

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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.