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Finding the Fourth Proportional to 92,961, 139,947.30 and 84,694.14

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Solution

The fourth proportional to 92,961, 139,947.30 and 84,694.14 is: 127,502.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,961 : 139,947.30 = 84,694.14 : x
  2. Step 2: Convert to fraction form
    92,961/139,947.30 = 84,694.14/x
  3. Step 3: Cross multiply
    92,961x = 139,947.30 × 84,694.14
  4. Step 4: Simplify right side
    92,961x = 11,852,716,218.82
  5. Step 5: Solve for x
    x = 11,852,716,218.82/92,961
  6. Step 6: Final answer
    x = 127,502.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.