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Finding the Fourth Proportional to 9,984.36, 13,779.06 and 5,508.12

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Solution

The fourth proportional to 9,984.36, 13,779.06 and 5,508.12 is: 7,601.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,984.36 : 13,779.06 = 5,508.12 : x
  2. Step 2: Convert to fraction form
    9,984.36/13,779.06 = 5,508.12/x
  3. Step 3: Cross multiply
    9,984.36x = 13,779.06 × 5,508.12
  4. Step 4: Simplify right side
    9,984.36x = 75,896,715.97
  5. Step 5: Solve for x
    x = 75,896,715.97/9,984.36
  6. Step 6: Final answer
    x = 7,601.56

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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.