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Finding the Fourth Proportional to 53,356.88, 79,958.54 and 39,205.76

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Solution

The fourth proportional to 53,356.88, 79,958.54 and 39,205.76 is: 58,752.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,356.88 : 79,958.54 = 39,205.76 : x
  2. Step 2: Convert to fraction form
    53,356.88/79,958.54 = 39,205.76/x
  3. Step 3: Cross multiply
    53,356.88x = 79,958.54 × 39,205.76
  4. Step 4: Simplify right side
    53,356.88x = 3,134,835,329.19
  5. Step 5: Solve for x
    x = 3,134,835,329.19/53,356.88
  6. Step 6: Final answer
    x = 58,752.22

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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.