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Finding the Fourth Proportional to 6,872.36, 9,486.14 and 4,888.67

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Solution

The fourth proportional to 6,872.36, 9,486.14 and 4,888.67 is: 6,747.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.36 : 9,486.14 = 4,888.67 : x
  2. Step 2: Convert to fraction form
    6,872.36/9,486.14 = 4,888.67/x
  3. Step 3: Cross multiply
    6,872.36x = 9,486.14 × 4,888.67
  4. Step 4: Simplify right side
    6,872.36x = 46,374,536.16
  5. Step 5: Solve for x
    x = 46,374,536.16/6,872.36
  6. Step 6: Final answer
    x = 6,747.98

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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.