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Finding the Fourth Proportional to 934.50, 1,400.36 and 846.60

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Solution

The fourth proportional to 934.50, 1,400.36 and 846.60 is: 1,268.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.50 : 1,400.36 = 846.60 : x
  2. Step 2: Convert to fraction form
    934.50/1,400.36 = 846.60/x
  3. Step 3: Cross multiply
    934.50x = 1,400.36 × 846.60
  4. Step 4: Simplify right side
    934.50x = 1,185,543.17
  5. Step 5: Solve for x
    x = 1,185,543.17/934.50
  6. Step 6: Final answer
    x = 1,268.63

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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.