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Finding the Fourth Proportional to 80,858.30, 113,434.90 and 80,858.30

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Solution

The fourth proportional to 80,858.30, 113,434.90 and 80,858.30 is: 113,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,858.30 : 113,434.90 = 80,858.30 : x
  2. Step 2: Convert to fraction form
    80,858.30/113,434.90 = 80,858.30/x
  3. Step 3: Cross multiply
    80,858.30x = 113,434.90 × 80,858.30
  4. Step 4: Simplify right side
    80,858.30x = 9,172,153,174.67
  5. Step 5: Solve for x
    x = 9,172,153,174.67/80,858.30
  6. Step 6: Final answer
    x = 113,434.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.