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Finding the Fourth Proportional to 38,598.88, 53,266.45 and 20,934.88

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Solution

The fourth proportional to 38,598.88, 53,266.45 and 20,934.88 is: 28,890.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,598.88 : 53,266.45 = 20,934.88 : x
  2. Step 2: Convert to fraction form
    38,598.88/53,266.45 = 20,934.88/x
  3. Step 3: Cross multiply
    38,598.88x = 53,266.45 × 20,934.88
  4. Step 4: Simplify right side
    38,598.88x = 1,115,126,738.78
  5. Step 5: Solve for x
    x = 1,115,126,738.78/38,598.88
  6. Step 6: Final answer
    x = 28,890.13

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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.