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Finding the Fourth Proportional to 38,599.88, 53,267.83 and 20,935.88

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Solution

The fourth proportional to 38,599.88, 53,267.83 and 20,935.88 is: 28,891.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,599.88 : 53,267.83 = 20,935.88 : x
  2. Step 2: Convert to fraction form
    38,599.88/53,267.83 = 20,935.88/x
  3. Step 3: Cross multiply
    38,599.88x = 53,267.83 × 20,935.88
  4. Step 4: Simplify right side
    38,599.88x = 1,115,208,896.74
  5. Step 5: Solve for x
    x = 1,115,208,896.74/38,599.88
  6. Step 6: Final answer
    x = 28,891.51

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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.