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Finding the Fourth Proportional to 13,608,778.95, 20,413,168.63 and 13,608,778.95

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Solution

The fourth proportional to 13,608,778.95, 20,413,168.63 and 13,608,778.95 is: 20,413,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,778.95 : 20,413,168.63 = 13,608,778.95 : x
  2. Step 2: Convert to fraction form
    13,608,778.95/20,413,168.63 = 13,608,778.95/x
  3. Step 3: Cross multiply
    13,608,778.95x = 20,413,168.63 × 13,608,778.95
  4. Step 4: Simplify right side
    13,608,778.95x = 277,798,299,520,722.41
  5. Step 5: Solve for x
    x = 277,798,299,520,722.41/13,608,778.95
  6. Step 6: Final answer
    x = 20,413,168.63

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1.5x scale

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.