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Finding the Fourth Proportional to 52,796.64, 72,859.20 and 28,924.08

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Solution

The fourth proportional to 52,796.64, 72,859.20 and 28,924.08 is: 39,915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,796.64 : 72,859.20 = 28,924.08 : x
  2. Step 2: Convert to fraction form
    52,796.64/72,859.20 = 28,924.08/x
  3. Step 3: Cross multiply
    52,796.64x = 72,859.20 × 28,924.08
  4. Step 4: Simplify right side
    52,796.64x = 2,107,385,329.54
  5. Step 5: Solve for x
    x = 2,107,385,329.54/52,796.64
  6. Step 6: Final answer
    x = 39,915.14

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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.