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Finding the Fourth Proportional to 155,957.78, 215,218.14 and 92,296.64

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Solution

The fourth proportional to 155,957.78, 215,218.14 and 92,296.64 is: 127,367.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,957.78 : 215,218.14 = 92,296.64 : x
  2. Step 2: Convert to fraction form
    155,957.78/215,218.14 = 92,296.64/x
  3. Step 3: Cross multiply
    155,957.78x = 215,218.14 × 92,296.64
  4. Step 4: Simplify right side
    155,957.78x = 19,863,911,189.05
  5. Step 5: Solve for x
    x = 19,863,911,189.05/155,957.78
  6. Step 6: Final answer
    x = 127,367.23

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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.