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Finding the Fourth Proportional to 52,976.49, 79,390.85 and 39,813.45

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Solution

The fourth proportional to 52,976.49, 79,390.85 and 39,813.45 is: 59,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,976.49 : 79,390.85 = 39,813.45 : x
  2. Step 2: Convert to fraction form
    52,976.49/79,390.85 = 39,813.45/x
  3. Step 3: Cross multiply
    52,976.49x = 79,390.85 × 39,813.45
  4. Step 4: Simplify right side
    52,976.49x = 3,160,823,437.87
  5. Step 5: Solve for x
    x = 3,160,823,437.87/52,976.49
  6. Step 6: Final answer
    x = 59,664.64

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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.