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Finding the Fourth Proportional to 124,633.94, 171,994.79 and 68,045.32

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Solution

The fourth proportional to 124,633.94, 171,994.79 and 68,045.32 is: 93,902.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,633.94 : 171,994.79 = 68,045.32 : x
  2. Step 2: Convert to fraction form
    124,633.94/171,994.79 = 68,045.32/x
  3. Step 3: Cross multiply
    124,633.94x = 171,994.79 × 68,045.32
  4. Step 4: Simplify right side
    124,633.94x = 11,703,439,941.52
  5. Step 5: Solve for x
    x = 11,703,439,941.52/124,633.94
  6. Step 6: Final answer
    x = 93,902.51

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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.