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Finding the Fourth Proportional to 22,709.78, 34,064.85 and 7,918.68

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Solution

The fourth proportional to 22,709.78, 34,064.85 and 7,918.68 is: 11,878.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,709.78 : 34,064.85 = 7,918.68 : x
  2. Step 2: Convert to fraction form
    22,709.78/34,064.85 = 7,918.68/x
  3. Step 3: Cross multiply
    22,709.78x = 34,064.85 × 7,918.68
  4. Step 4: Simplify right side
    22,709.78x = 269,748,646.40
  5. Step 5: Solve for x
    x = 269,748,646.40/22,709.78
  6. Step 6: Final answer
    x = 11,878.09

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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.