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Finding the Fourth Proportional to 335,912.40, 503,868.60 and 99,262.80

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Solution

The fourth proportional to 335,912.40, 503,868.60 and 99,262.80 is: 148,894.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,912.40 : 503,868.60 = 99,262.80 : x
  2. Step 2: Convert to fraction form
    335,912.40/503,868.60 = 99,262.80/x
  3. Step 3: Cross multiply
    335,912.40x = 503,868.60 × 99,262.80
  4. Step 4: Simplify right side
    335,912.40x = 50,015,408,068.08
  5. Step 5: Solve for x
    x = 50,015,408,068.08/335,912.40
  6. Step 6: Final answer
    x = 148,894.20

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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.