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Finding the Fourth Proportional to 1,193.05, 1,646.85 and 695.84

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Solution

The fourth proportional to 1,193.05, 1,646.85 and 695.84 is: 960.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.05 : 1,646.85 = 695.84 : x
  2. Step 2: Convert to fraction form
    1,193.05/1,646.85 = 695.84/x
  3. Step 3: Cross multiply
    1,193.05x = 1,646.85 × 695.84
  4. Step 4: Simplify right side
    1,193.05x = 1,145,944.10
  5. Step 5: Solve for x
    x = 1,145,944.10/1,193.05
  6. Step 6: Final answer
    x = 960.52

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Half scale
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Double 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.