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Finding the Fourth Proportional to 3,592.10, 5,388.14 and 1,128.99

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Solution

The fourth proportional to 3,592.10, 5,388.14 and 1,128.99 is: 1,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,592.10 : 5,388.14 = 1,128.99 : x
  2. Step 2: Convert to fraction form
    3,592.10/5,388.14 = 1,128.99/x
  3. Step 3: Cross multiply
    3,592.10x = 5,388.14 × 1,128.99
  4. Step 4: Simplify right side
    3,592.10x = 6,083,150.53
  5. Step 5: Solve for x
    x = 6,083,150.53/3,592.10
  6. Step 6: Final answer
    x = 1,693.48

Related Problems

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.