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Finding the Fourth Proportional to 933.53, 1,400.21 and 703.59

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Solution

The fourth proportional to 933.53, 1,400.21 and 703.59 is: 1,055.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.53 : 1,400.21 = 703.59 : x
  2. Step 2: Convert to fraction form
    933.53/1,400.21 = 703.59/x
  3. Step 3: Cross multiply
    933.53x = 1,400.21 × 703.59
  4. Step 4: Simplify right side
    933.53x = 985,169.60
  5. Step 5: Solve for x
    x = 985,169.60/933.53
  6. Step 6: Final answer
    x = 1,055.32

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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.