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Finding the Fourth Proportional to 12,468.74, 18,686.94 and 5,064.60

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Solution

The fourth proportional to 12,468.74, 18,686.94 and 5,064.60 is: 7,590.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,468.74 : 18,686.94 = 5,064.60 : x
  2. Step 2: Convert to fraction form
    12,468.74/18,686.94 = 5,064.60/x
  3. Step 3: Cross multiply
    12,468.74x = 18,686.94 × 5,064.60
  4. Step 4: Simplify right side
    12,468.74x = 94,641,876.32
  5. Step 5: Solve for x
    x = 94,641,876.32/12,468.74
  6. Step 6: Final answer
    x = 7,590.34

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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.