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Finding the Fourth Proportional to 13,476,805.60, 20,183,715.60 and 13,206,200.80

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Solution

The fourth proportional to 13,476,805.60, 20,183,715.60 and 13,206,200.80 is: 19,778,440.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,476,805.60 : 20,183,715.60 = 13,206,200.80 : x
  2. Step 2: Convert to fraction form
    13,476,805.60/20,183,715.60 = 13,206,200.80/x
  3. Step 3: Cross multiply
    13,476,805.60x = 20,183,715.60 × 13,206,200.80
  4. Step 4: Simplify right side
    13,476,805.60x = 266,550,201,103,692.50
  5. Step 5: Solve for x
    x = 266,550,201,103,692.50/13,476,805.60
  6. Step 6: Final answer
    x = 19,778,440.75

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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.