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Finding the Fourth Proportional to 35,115.94, 48,448.12 and 19,997.88

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Solution

The fourth proportional to 35,115.94, 48,448.12 and 19,997.88 is: 27,590.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,115.94 : 48,448.12 = 19,997.88 : x
  2. Step 2: Convert to fraction form
    35,115.94/48,448.12 = 19,997.88/x
  3. Step 3: Cross multiply
    35,115.94x = 48,448.12 × 19,997.88
  4. Step 4: Simplify right side
    35,115.94x = 968,859,689.99
  5. Step 5: Solve for x
    x = 968,859,689.99/35,115.94
  6. Step 6: Final answer
    x = 27,590.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.