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Finding the Fourth Proportional to 316,889.36, 475,411.86 and 92,251.76

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Solution

The fourth proportional to 316,889.36, 475,411.86 and 92,251.76 is: 138,400.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,889.36 : 475,411.86 = 92,251.76 : x
  2. Step 2: Convert to fraction form
    316,889.36/475,411.86 = 92,251.76/x
  3. Step 3: Cross multiply
    316,889.36x = 475,411.86 × 92,251.76
  4. Step 4: Simplify right side
    316,889.36x = 43,857,580,809.87
  5. Step 5: Solve for x
    x = 43,857,580,809.87/316,889.36
  6. Step 6: Final answer
    x = 138,400.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.