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Finding the Fourth Proportional to 12,398.01, 17,109.27 and 7,092.51

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Solution

The fourth proportional to 12,398.01, 17,109.27 and 7,092.51 is: 9,787.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.01 : 17,109.27 = 7,092.51 : x
  2. Step 2: Convert to fraction form
    12,398.01/17,109.27 = 7,092.51/x
  3. Step 3: Cross multiply
    12,398.01x = 17,109.27 × 7,092.51
  4. Step 4: Simplify right side
    12,398.01x = 121,347,668.57
  5. Step 5: Solve for x
    x = 121,347,668.57/12,398.01
  6. Step 6: Final answer
    x = 9,787.67

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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.