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Finding the Fourth Proportional to 113,483, 156,611.40 and 63,182

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Solution

The fourth proportional to 113,483, 156,611.40 and 63,182 is: 87,193.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,483 : 156,611.40 = 63,182 : x
  2. Step 2: Convert to fraction form
    113,483/156,611.40 = 63,182/x
  3. Step 3: Cross multiply
    113,483x = 156,611.40 × 63,182
  4. Step 4: Simplify right side
    113,483x = 9,895,021,474.80
  5. Step 5: Solve for x
    x = 9,895,021,474.80/113,483
  6. Step 6: Final answer
    x = 87,193.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.