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Finding the Fourth Proportional to 3,305.88, 4,561.52 and 1,888.92

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Solution

The fourth proportional to 3,305.88, 4,561.52 and 1,888.92 is: 2,606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.88 : 4,561.52 = 1,888.92 : x
  2. Step 2: Convert to fraction form
    3,305.88/4,561.52 = 1,888.92/x
  3. Step 3: Cross multiply
    3,305.88x = 4,561.52 × 1,888.92
  4. Step 4: Simplify right side
    3,305.88x = 8,616,346.36
  5. Step 5: Solve for x
    x = 8,616,346.36/3,305.88
  6. Step 6: Final answer
    x = 2,606.37

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Half scale
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Double scale
Find fourth proportional to 3,306.88, 4,562.90 and 1,889.92
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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.