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Finding the Fourth Proportional to 92,287, 138,335.93 and 70,053.31

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Solution

The fourth proportional to 92,287, 138,335.93 and 70,053.31 is: 105,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,287 : 138,335.93 = 70,053.31 : x
  2. Step 2: Convert to fraction form
    92,287/138,335.93 = 70,053.31/x
  3. Step 3: Cross multiply
    92,287x = 138,335.93 × 70,053.31
  4. Step 4: Simplify right side
    92,287x = 9,690,889,963.56
  5. Step 5: Solve for x
    x = 9,690,889,963.56/92,287
  6. Step 6: Final answer
    x = 105,008.18

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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.