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Finding the Fourth Proportional to 157,288.52, 217,079.58 and 92,775.98

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Solution

The fourth proportional to 157,288.52, 217,079.58 and 92,775.98 is: 128,043.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,288.52 : 217,079.58 = 92,775.98 : x
  2. Step 2: Convert to fraction form
    157,288.52/217,079.58 = 92,775.98/x
  3. Step 3: Cross multiply
    157,288.52x = 217,079.58 × 92,775.98
  4. Step 4: Simplify right side
    157,288.52x = 20,139,770,772.49
  5. Step 5: Solve for x
    x = 20,139,770,772.49/157,288.52
  6. Step 6: Final answer
    x = 128,043.49

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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.