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Finding the Fourth Proportional to 66,404.13, 99,625.70 and 19,658.22

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Solution

The fourth proportional to 66,404.13, 99,625.70 and 19,658.22 is: 29,493.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,404.13 : 99,625.70 = 19,658.22 : x
  2. Step 2: Convert to fraction form
    66,404.13/99,625.70 = 19,658.22/x
  3. Step 3: Cross multiply
    66,404.13x = 99,625.70 × 19,658.22
  4. Step 4: Simplify right side
    66,404.13x = 1,958,463,928.25
  5. Step 5: Solve for x
    x = 1,958,463,928.25/66,404.13
  6. Step 6: Final answer
    x = 29,493.10

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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.