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Finding the Fourth Proportional to 156,987.94, 235,476.64 and 68,241.44

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Solution

The fourth proportional to 156,987.94, 235,476.64 and 68,241.44 is: 102,359.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,987.94 : 235,476.64 = 68,241.44 : x
  2. Step 2: Convert to fraction form
    156,987.94/235,476.64 = 68,241.44/x
  3. Step 3: Cross multiply
    156,987.94x = 235,476.64 × 68,241.44
  4. Step 4: Simplify right side
    156,987.94x = 16,069,264,999.96
  5. Step 5: Solve for x
    x = 16,069,264,999.96/156,987.94
  6. Step 6: Final answer
    x = 102,359.87

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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.