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Finding the Fourth Proportional to 17,922.40, 26,905.20 and 10,031.20

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Solution

The fourth proportional to 17,922.40, 26,905.20 and 10,031.20 is: 15,058.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,922.40 : 26,905.20 = 10,031.20 : x
  2. Step 2: Convert to fraction form
    17,922.40/26,905.20 = 10,031.20/x
  3. Step 3: Cross multiply
    17,922.40x = 26,905.20 × 10,031.20
  4. Step 4: Simplify right side
    17,922.40x = 269,891,442.24
  5. Step 5: Solve for x
    x = 269,891,442.24/17,922.40
  6. Step 6: Final answer
    x = 15,058.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.