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Finding the Fourth Proportional to 1,566.24, 2,160.94 and 936.76

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Solution

The fourth proportional to 1,566.24, 2,160.94 and 936.76 is: 1,292.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.24 : 2,160.94 = 936.76 : x
  2. Step 2: Convert to fraction form
    1,566.24/2,160.94 = 936.76/x
  3. Step 3: Cross multiply
    1,566.24x = 2,160.94 × 936.76
  4. Step 4: Simplify right side
    1,566.24x = 2,024,282.15
  5. Step 5: Solve for x
    x = 2,024,282.15/1,566.24
  6. Step 6: Final answer
    x = 1,292.45

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Half scale
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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.