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Finding the Fourth Proportional to 156,962.40, 235,438.40 and 68,216.01

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Solution

The fourth proportional to 156,962.40, 235,438.40 and 68,216.01 is: 102,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,962.40 : 235,438.40 = 68,216.01 : x
  2. Step 2: Convert to fraction form
    156,962.40/235,438.40 = 68,216.01/x
  3. Step 3: Cross multiply
    156,962.40x = 235,438.40 × 68,216.01
  4. Step 4: Simplify right side
    156,962.40x = 16,060,667,907.70
  5. Step 5: Solve for x
    x = 16,060,667,907.70/156,962.40
  6. Step 6: Final answer
    x = 102,321.75

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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.