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Finding the Fourth Proportional to 38,951.17, 53,752.64 and 21,046.17

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Solution

The fourth proportional to 38,951.17, 53,752.64 and 21,046.17 is: 29,043.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,951.17 : 53,752.64 = 21,046.17 : x
  2. Step 2: Convert to fraction form
    38,951.17/53,752.64 = 21,046.17/x
  3. Step 3: Cross multiply
    38,951.17x = 53,752.64 × 21,046.17
  4. Step 4: Simplify right side
    38,951.17x = 1,131,287,199.39
  5. Step 5: Solve for x
    x = 1,131,287,199.39/38,951.17
  6. Step 6: Final answer
    x = 29,043.73

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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.