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Finding the Fourth Proportional to 156,695.80, 235,084.23 and 67,928.80

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Solution

The fourth proportional to 156,695.80, 235,084.23 and 67,928.80 is: 101,910.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,695.80 : 235,084.23 = 67,928.80 : x
  2. Step 2: Convert to fraction form
    156,695.80/235,084.23 = 67,928.80/x
  3. Step 3: Cross multiply
    156,695.80x = 235,084.23 × 67,928.80
  4. Step 4: Simplify right side
    156,695.80x = 15,968,989,642.82
  5. Step 5: Solve for x
    x = 15,968,989,642.82/156,695.80
  6. Step 6: Final answer
    x = 101,910.77

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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.