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Finding the Fourth Proportional to 125,196.24, 187,791.12 and 42,090.24

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Solution

The fourth proportional to 125,196.24, 187,791.12 and 42,090.24 is: 63,134.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,196.24 : 187,791.12 = 42,090.24 : x
  2. Step 2: Convert to fraction form
    125,196.24/187,791.12 = 42,090.24/x
  3. Step 3: Cross multiply
    125,196.24x = 187,791.12 × 42,090.24
  4. Step 4: Simplify right side
    125,196.24x = 7,904,173,310.67
  5. Step 5: Solve for x
    x = 7,904,173,310.67/125,196.24
  6. Step 6: Final answer
    x = 63,134.27

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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.