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Finding the Fourth Proportional to 1,166.76, 1,610.40 and 701

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Solution

The fourth proportional to 1,166.76, 1,610.40 and 701 is: 967.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.76 : 1,610.40 = 701 : x
  2. Step 2: Convert to fraction form
    1,166.76/1,610.40 = 701/x
  3. Step 3: Cross multiply
    1,166.76x = 1,610.40 × 701
  4. Step 4: Simplify right side
    1,166.76x = 1,128,890.40
  5. Step 5: Solve for x
    x = 1,128,890.40/1,166.76
  6. Step 6: Final answer
    x = 967.54

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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.