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Finding the Fourth Proportional to 17,978,746.55, 24,794,124.12 and 11,781,542.45

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Solution

The fourth proportional to 17,978,746.55, 24,794,124.12 and 11,781,542.45 is: 16,247,685.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,978,746.55 : 24,794,124.12 = 11,781,542.45 : x
  2. Step 2: Convert to fraction form
    17,978,746.55/24,794,124.12 = 11,781,542.45/x
  3. Step 3: Cross multiply
    17,978,746.55x = 24,794,124.12 × 11,781,542.45
  4. Step 4: Simplify right side
    17,978,746.55x = 292,113,025,892,334.25
  5. Step 5: Solve for x
    x = 292,113,025,892,334.25/17,978,746.55
  6. Step 6: Final answer
    x = 16,247,685.85

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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.