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Finding the Fourth Proportional to 118,595.86, 163,669.54 and 68,311.06

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Solution

The fourth proportional to 118,595.86, 163,669.54 and 68,311.06 is: 94,273.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,595.86 : 163,669.54 = 68,311.06 : x
  2. Step 2: Convert to fraction form
    118,595.86/163,669.54 = 68,311.06/x
  3. Step 3: Cross multiply
    118,595.86x = 163,669.54 × 68,311.06
  4. Step 4: Simplify right side
    118,595.86x = 11,180,439,767.11
  5. Step 5: Solve for x
    x = 11,180,439,767.11/118,595.86
  6. Step 6: Final answer
    x = 94,273.44

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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.