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Finding the Fourth Proportional to 53,205.80, 79,808.70 and 31,044.20

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Solution

The fourth proportional to 53,205.80, 79,808.70 and 31,044.20 is: 46,566.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,205.80 : 79,808.70 = 31,044.20 : x
  2. Step 2: Convert to fraction form
    53,205.80/79,808.70 = 31,044.20/x
  3. Step 3: Cross multiply
    53,205.80x = 79,808.70 × 31,044.20
  4. Step 4: Simplify right side
    53,205.80x = 2,477,597,244.54
  5. Step 5: Solve for x
    x = 2,477,597,244.54/53,205.80
  6. Step 6: Final answer
    x = 46,566.30

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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.