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Finding the Fourth Proportional to 92,953.96, 139,936.72 and 84,687.10

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Solution

The fourth proportional to 92,953.96, 139,936.72 and 84,687.10 is: 127,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,953.96 : 139,936.72 = 84,687.10 : x
  2. Step 2: Convert to fraction form
    92,953.96/139,936.72 = 84,687.10/x
  3. Step 3: Cross multiply
    92,953.96x = 139,936.72 × 84,687.10
  4. Step 4: Simplify right side
    92,953.96x = 11,850,835,000.31
  5. Step 5: Solve for x
    x = 11,850,835,000.31/92,953.96
  6. Step 6: Final answer
    x = 127,491.45

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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.