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Finding the Fourth Proportional to 53,070.80, 79,596.30 and 21,472.58

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Solution

The fourth proportional to 53,070.80, 79,596.30 and 21,472.58 is: 32,204.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,070.80 : 79,596.30 = 21,472.58 : x
  2. Step 2: Convert to fraction form
    53,070.80/79,596.30 = 21,472.58/x
  3. Step 3: Cross multiply
    53,070.80x = 79,596.30 × 21,472.58
  4. Step 4: Simplify right side
    53,070.80x = 1,709,137,919.45
  5. Step 5: Solve for x
    x = 1,709,137,919.45/53,070.80
  6. Step 6: Final answer
    x = 32,204.86

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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.