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Finding the Fourth Proportional to 52,694.64, 72,720.72 and 28,822.32

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Solution

The fourth proportional to 52,694.64, 72,720.72 and 28,822.32 is: 39,775.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,694.64 : 72,720.72 = 28,822.32 : x
  2. Step 2: Convert to fraction form
    52,694.64/72,720.72 = 28,822.32/x
  3. Step 3: Cross multiply
    52,694.64x = 72,720.72 × 28,822.32
  4. Step 4: Simplify right side
    52,694.64x = 2,095,979,862.47
  5. Step 5: Solve for x
    x = 2,095,979,862.47/52,694.64
  6. Step 6: Final answer
    x = 39,775.96

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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.