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Finding the Fourth Proportional to 7,394.40, 11,167.20 and 7,394.40

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Solution

The fourth proportional to 7,394.40, 11,167.20 and 7,394.40 is: 11,167.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,394.40 : 11,167.20 = 7,394.40 : x
  2. Step 2: Convert to fraction form
    7,394.40/11,167.20 = 7,394.40/x
  3. Step 3: Cross multiply
    7,394.40x = 11,167.20 × 7,394.40
  4. Step 4: Simplify right side
    7,394.40x = 82,574,743.68
  5. Step 5: Solve for x
    x = 82,574,743.68/7,394.40
  6. Step 6: Final answer
    x = 11,167.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.