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Finding the Fourth Proportional to 48,559.40, 72,839.10 and 28,898.60

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Solution

The fourth proportional to 48,559.40, 72,839.10 and 28,898.60 is: 43,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,559.40 : 72,839.10 = 28,898.60 : x
  2. Step 2: Convert to fraction form
    48,559.40/72,839.10 = 28,898.60/x
  3. Step 3: Cross multiply
    48,559.40x = 72,839.10 × 28,898.60
  4. Step 4: Simplify right side
    48,559.40x = 2,104,948,015.26
  5. Step 5: Solve for x
    x = 2,104,948,015.26/48,559.40
  6. Step 6: Final answer
    x = 43,347.90

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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.