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Finding the Fourth Proportional to 28,907.60, 43,361.40 and 15,054.80

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Solution

The fourth proportional to 28,907.60, 43,361.40 and 15,054.80 is: 22,582.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.60 : 43,361.40 = 15,054.80 : x
  2. Step 2: Convert to fraction form
    28,907.60/43,361.40 = 15,054.80/x
  3. Step 3: Cross multiply
    28,907.60x = 43,361.40 × 15,054.80
  4. Step 4: Simplify right side
    28,907.60x = 652,797,204.72
  5. Step 5: Solve for x
    x = 652,797,204.72/28,907.60
  6. Step 6: Final answer
    x = 22,582.20

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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.