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Finding the Fourth Proportional to 156,859.89, 216,462.27 and 85,237.53

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Solution

The fourth proportional to 156,859.89, 216,462.27 and 85,237.53 is: 117,625.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,859.89 : 216,462.27 = 85,237.53 : x
  2. Step 2: Convert to fraction form
    156,859.89/216,462.27 = 85,237.53/x
  3. Step 3: Cross multiply
    156,859.89x = 216,462.27 × 85,237.53
  4. Step 4: Simplify right side
    156,859.89x = 18,450,709,232.99
  5. Step 5: Solve for x
    x = 18,450,709,232.99/156,859.89
  6. Step 6: Final answer
    x = 117,625.41

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1.5x scale

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.