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Finding the Fourth Proportional to 48,455.40, 72,687.90 and 16,860.60

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Solution

The fourth proportional to 48,455.40, 72,687.90 and 16,860.60 is: 25,292.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,455.40 : 72,687.90 = 16,860.60 : x
  2. Step 2: Convert to fraction form
    48,455.40/72,687.90 = 16,860.60/x
  3. Step 3: Cross multiply
    48,455.40x = 72,687.90 × 16,860.60
  4. Step 4: Simplify right side
    48,455.40x = 1,225,561,606.74
  5. Step 5: Solve for x
    x = 1,225,561,606.74/48,455.40
  6. Step 6: Final answer
    x = 25,292.57

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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.