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Finding the Fourth Proportional to 8,911.88, 12,299.01 and 4,933.16

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Solution

The fourth proportional to 8,911.88, 12,299.01 and 4,933.16 is: 6,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.88 : 12,299.01 = 4,933.16 : x
  2. Step 2: Convert to fraction form
    8,911.88/12,299.01 = 4,933.16/x
  3. Step 3: Cross multiply
    8,911.88x = 12,299.01 × 4,933.16
  4. Step 4: Simplify right side
    8,911.88x = 60,672,984.17
  5. Step 5: Solve for x
    x = 60,672,984.17/8,911.88
  6. Step 6: Final answer
    x = 6,808.10

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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.