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Finding the Fourth Proportional to 4,918.11, 7,321.53 and 4,888.92

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Solution

The fourth proportional to 4,918.11, 7,321.53 and 4,888.92 is: 7,278.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.11 : 7,321.53 = 4,888.92 : x
  2. Step 2: Convert to fraction form
    4,918.11/7,321.53 = 4,888.92/x
  3. Step 3: Cross multiply
    4,918.11x = 7,321.53 × 4,888.92
  4. Step 4: Simplify right side
    4,918.11x = 35,794,374.45
  5. Step 5: Solve for x
    x = 35,794,374.45/4,918.11
  6. Step 6: Final answer
    x = 7,278.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.