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Finding the Fourth Proportional to 172,965.92, 238,671.76 and 101,329.52

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Solution

The fourth proportional to 172,965.92, 238,671.76 and 101,329.52 is: 139,822.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,965.92 : 238,671.76 = 101,329.52 : x
  2. Step 2: Convert to fraction form
    172,965.92/238,671.76 = 101,329.52/x
  3. Step 3: Cross multiply
    172,965.92x = 238,671.76 × 101,329.52
  4. Step 4: Simplify right side
    172,965.92x = 24,184,494,878.36
  5. Step 5: Solve for x
    x = 24,184,494,878.36/172,965.92
  6. Step 6: Final answer
    x = 139,822.31

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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.