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Finding the Fourth Proportional to 61,900.21, 85,424.25 and 35,042.23

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Solution

The fourth proportional to 61,900.21, 85,424.25 and 35,042.23 is: 48,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,900.21 : 85,424.25 = 35,042.23 : x
  2. Step 2: Convert to fraction form
    61,900.21/85,424.25 = 35,042.23/x
  3. Step 3: Cross multiply
    61,900.21x = 85,424.25 × 35,042.23
  4. Step 4: Simplify right side
    61,900.21x = 2,993,456,216.08
  5. Step 5: Solve for x
    x = 2,993,456,216.08/61,900.21
  6. Step 6: Final answer
    x = 48,359.39

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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.