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Finding the Fourth Proportional to 7,123.22, 9,822.49 and 4,888.36

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Solution

The fourth proportional to 7,123.22, 9,822.49 and 4,888.36 is: 6,740.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.22 : 9,822.49 = 4,888.36 : x
  2. Step 2: Convert to fraction form
    7,123.22/9,822.49 = 4,888.36/x
  3. Step 3: Cross multiply
    7,123.22x = 9,822.49 × 4,888.36
  4. Step 4: Simplify right side
    7,123.22x = 48,015,867.22
  5. Step 5: Solve for x
    x = 48,015,867.22/7,123.22
  6. Step 6: Final answer
    x = 6,740.75

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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.