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Finding the Fourth Proportional to 35,296.70, 48,700.32 and 21,139.52

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Solution

The fourth proportional to 35,296.70, 48,700.32 and 21,139.52 is: 29,167.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,296.70 : 48,700.32 = 21,139.52 : x
  2. Step 2: Convert to fraction form
    35,296.70/48,700.32 = 21,139.52/x
  3. Step 3: Cross multiply
    35,296.70x = 48,700.32 × 21,139.52
  4. Step 4: Simplify right side
    35,296.70x = 1,029,501,388.65
  5. Step 5: Solve for x
    x = 1,029,501,388.65/35,296.70
  6. Step 6: Final answer
    x = 29,167.07

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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.