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Finding the Fourth Proportional to 7,190.95, 9,921.19 and 4,046.53

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Solution

The fourth proportional to 7,190.95, 9,921.19 and 4,046.53 is: 5,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.95 : 9,921.19 = 4,046.53 : x
  2. Step 2: Convert to fraction form
    7,190.95/9,921.19 = 4,046.53/x
  3. Step 3: Cross multiply
    7,190.95x = 9,921.19 × 4,046.53
  4. Step 4: Simplify right side
    7,190.95x = 40,146,333.25
  5. Step 5: Solve for x
    x = 40,146,333.25/7,190.95
  6. Step 6: Final answer
    x = 5,582.90

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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.