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Finding the Fourth Proportional to 156,287.88, 215,605.80 and 92,589.48

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Solution

The fourth proportional to 156,287.88, 215,605.80 and 92,589.48 is: 127,731.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,287.88 : 215,605.80 = 92,589.48 : x
  2. Step 2: Convert to fraction form
    156,287.88/215,605.80 = 92,589.48/x
  3. Step 3: Cross multiply
    156,287.88x = 215,605.80 × 92,589.48
  4. Step 4: Simplify right side
    156,287.88x = 19,962,828,906.98
  5. Step 5: Solve for x
    x = 19,962,828,906.98/156,287.88
  6. Step 6: Final answer
    x = 127,731.14

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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.