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Finding the Fourth Proportional to 53,069.80, 79,594.80 and 21,471.58

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Solution

The fourth proportional to 53,069.80, 79,594.80 and 21,471.58 is: 32,203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,069.80 : 79,594.80 = 21,471.58 : x
  2. Step 2: Convert to fraction form
    53,069.80/79,594.80 = 21,471.58/x
  3. Step 3: Cross multiply
    53,069.80x = 79,594.80 × 21,471.58
  4. Step 4: Simplify right side
    53,069.80x = 1,709,026,115.78
  5. Step 5: Solve for x
    x = 1,709,026,115.78/53,069.80
  6. Step 6: Final answer
    x = 32,203.36

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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.