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Finding the Fourth Proportional to 13,998,411.20, 20,997,616.80 and 11,606,926.70

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Solution

The fourth proportional to 13,998,411.20, 20,997,616.80 and 11,606,926.70 is: 17,410,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998,411.20 : 20,997,616.80 = 11,606,926.70 : x
  2. Step 2: Convert to fraction form
    13,998,411.20/20,997,616.80 = 11,606,926.70/x
  3. Step 3: Cross multiply
    13,998,411.20x = 20,997,616.80 × 11,606,926.70
  4. Step 4: Simplify right side
    13,998,411.20x = 243,717,799,072,288.56
  5. Step 5: Solve for x
    x = 243,717,799,072,288.56/13,998,411.20
  6. Step 6: Final answer
    x = 17,410,390.05

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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.