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Finding the Fourth Proportional to 28,573.02, 42,860.07 and 7,796.52

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Solution

The fourth proportional to 28,573.02, 42,860.07 and 7,796.52 is: 11,694.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,573.02 : 42,860.07 = 7,796.52 : x
  2. Step 2: Convert to fraction form
    28,573.02/42,860.07 = 7,796.52/x
  3. Step 3: Cross multiply
    28,573.02x = 42,860.07 × 7,796.52
  4. Step 4: Simplify right side
    28,573.02x = 334,159,392.96
  5. Step 5: Solve for x
    x = 334,159,392.96/28,573.02
  6. Step 6: Final answer
    x = 11,694.93

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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.