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Finding the Fourth Proportional to 7,195.12, 9,917.04 and 5,071.52

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Solution

The fourth proportional to 7,195.12, 9,917.04 and 5,071.52 is: 6,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,195.12 : 9,917.04 = 5,071.52 : x
  2. Step 2: Convert to fraction form
    7,195.12/9,917.04 = 5,071.52/x
  3. Step 3: Cross multiply
    7,195.12x = 9,917.04 × 5,071.52
  4. Step 4: Simplify right side
    7,195.12x = 50,294,466.70
  5. Step 5: Solve for x
    x = 50,294,466.70/7,195.12
  6. Step 6: Final answer
    x = 6,990.08

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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.