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Finding the Fourth Proportional to 8,907.56, 13,351.44 and 7,870.04

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Solution

The fourth proportional to 8,907.56, 13,351.44 and 7,870.04 is: 11,796.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.56 : 13,351.44 = 7,870.04 : x
  2. Step 2: Convert to fraction form
    8,907.56/13,351.44 = 7,870.04/x
  3. Step 3: Cross multiply
    8,907.56x = 13,351.44 × 7,870.04
  4. Step 4: Simplify right side
    8,907.56x = 105,076,366.86
  5. Step 5: Solve for x
    x = 105,076,366.86/8,907.56
  6. Step 6: Final answer
    x = 11,796.31

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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.