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Finding the Fourth Proportional to 52,690.92, 72,713.52 and 28,817.52

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Solution

The fourth proportional to 52,690.92, 72,713.52 and 28,817.52 is: 39,768.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,690.92 : 72,713.52 = 28,817.52 : x
  2. Step 2: Convert to fraction form
    52,690.92/72,713.52 = 28,817.52/x
  3. Step 3: Cross multiply
    52,690.92x = 72,713.52 × 28,817.52
  4. Step 4: Simplify right side
    52,690.92x = 2,095,423,316.87
  5. Step 5: Solve for x
    x = 2,095,423,316.87/52,690.92
  6. Step 6: Final answer
    x = 39,768.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.