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Finding the Fourth Proportional to 2,653.77, 3,666.90 and 1,910.19

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Solution

The fourth proportional to 2,653.77, 3,666.90 and 1,910.19 is: 2,639.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.77 : 3,666.90 = 1,910.19 : x
  2. Step 2: Convert to fraction form
    2,653.77/3,666.90 = 1,910.19/x
  3. Step 3: Cross multiply
    2,653.77x = 3,666.90 × 1,910.19
  4. Step 4: Simplify right side
    2,653.77x = 7,004,475.71
  5. Step 5: Solve for x
    x = 7,004,475.71/2,653.77
  6. Step 6: Final answer
    x = 2,639.44

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Half scale
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Double scale
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Similar ratio
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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.