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Finding the Fourth Proportional to 156,168.72, 215,532.36 and 92,530.80

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Solution

The fourth proportional to 156,168.72, 215,532.36 and 92,530.80 is: 127,704.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,168.72 : 215,532.36 = 92,530.80 : x
  2. Step 2: Convert to fraction form
    156,168.72/215,532.36 = 92,530.80/x
  3. Step 3: Cross multiply
    156,168.72x = 215,532.36 × 92,530.80
  4. Step 4: Simplify right side
    156,168.72x = 19,943,381,696.69
  5. Step 5: Solve for x
    x = 19,943,381,696.69/156,168.72
  6. Step 6: Final answer
    x = 127,704.07

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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.