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Finding the Fourth Proportional to 19,945,905.90, 29,918,858.85 and 19,945,905.90

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Solution

The fourth proportional to 19,945,905.90, 29,918,858.85 and 19,945,905.90 is: 29,918,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,945,905.90 : 29,918,858.85 = 19,945,905.90 : x
  2. Step 2: Convert to fraction form
    19,945,905.90/29,918,858.85 = 19,945,905.90/x
  3. Step 3: Cross multiply
    19,945,905.90x = 29,918,858.85 × 19,945,905.90
  4. Step 4: Simplify right side
    19,945,905.90x = 596,758,743,257,482.25
  5. Step 5: Solve for x
    x = 596,758,743,257,482.25/19,945,905.90
  6. Step 6: Final answer
    x = 29,918,858.85

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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.