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Finding the Fourth Proportional to 37,609, 51,905.60 and 21,693.10

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Solution

The fourth proportional to 37,609, 51,905.60 and 21,693.10 is: 29,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,609 : 51,905.60 = 21,693.10 : x
  2. Step 2: Convert to fraction form
    37,609/51,905.60 = 21,693.10/x
  3. Step 3: Cross multiply
    37,609x = 51,905.60 × 21,693.10
  4. Step 4: Simplify right side
    37,609x = 1,125,993,371.36
  5. Step 5: Solve for x
    x = 1,125,993,371.36/37,609
  6. Step 6: Final answer
    x = 29,939.47

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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.