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Finding the Fourth Proportional to 32,531.20, 48,796.80 and 7,907.20

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Solution

The fourth proportional to 32,531.20, 48,796.80 and 7,907.20 is: 11,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,531.20 : 48,796.80 = 7,907.20 : x
  2. Step 2: Convert to fraction form
    32,531.20/48,796.80 = 7,907.20/x
  3. Step 3: Cross multiply
    32,531.20x = 48,796.80 × 7,907.20
  4. Step 4: Simplify right side
    32,531.20x = 385,846,056.96
  5. Step 5: Solve for x
    x = 385,846,056.96/32,531.20
  6. Step 6: Final answer
    x = 11,860.80

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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.