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Finding the Fourth Proportional to 11,209,415.80, 16,787,551.65 and 11,209,415.80

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Solution

The fourth proportional to 11,209,415.80, 16,787,551.65 and 11,209,415.80 is: 16,787,551.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209,415.80 : 16,787,551.65 = 11,209,415.80 : x
  2. Step 2: Convert to fraction form
    11,209,415.80/16,787,551.65 = 11,209,415.80/x
  3. Step 3: Cross multiply
    11,209,415.80x = 16,787,551.65 × 11,209,415.80
  4. Step 4: Simplify right side
    11,209,415.80x = 188,178,646,708,826.06
  5. Step 5: Solve for x
    x = 188,178,646,708,826.06/11,209,415.80
  6. Step 6: Final answer
    x = 16,787,551.65

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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.