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Finding the Fourth Proportional to 38,798.64, 53,540.28 and 22,031.28

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Solution

The fourth proportional to 38,798.64, 53,540.28 and 22,031.28 is: 30,402.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,798.64 : 53,540.28 = 22,031.28 : x
  2. Step 2: Convert to fraction form
    38,798.64/53,540.28 = 22,031.28/x
  3. Step 3: Cross multiply
    38,798.64x = 53,540.28 × 22,031.28
  4. Step 4: Simplify right side
    38,798.64x = 1,179,560,899.96
  5. Step 5: Solve for x
    x = 1,179,560,899.96/38,798.64
  6. Step 6: Final answer
    x = 30,402.12

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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.