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Finding the Fourth Proportional to 228,563.15, 342,934.97 and 70,803.90

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Solution

The fourth proportional to 228,563.15, 342,934.97 and 70,803.90 is: 106,233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,563.15 : 342,934.97 = 70,803.90 : x
  2. Step 2: Convert to fraction form
    228,563.15/342,934.97 = 70,803.90/x
  3. Step 3: Cross multiply
    228,563.15x = 342,934.97 × 70,803.90
  4. Step 4: Simplify right side
    228,563.15x = 24,281,132,968.36
  5. Step 5: Solve for x
    x = 24,281,132,968.36/228,563.15
  6. Step 6: Final answer
    x = 106,233.81

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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.