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Finding the Fourth Proportional to 186,118.66, 256,835.98 and 109,640.89

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Solution

The fourth proportional to 186,118.66, 256,835.98 and 109,640.89 is: 151,299.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,118.66 : 256,835.98 = 109,640.89 : x
  2. Step 2: Convert to fraction form
    186,118.66/256,835.98 = 109,640.89/x
  3. Step 3: Cross multiply
    186,118.66x = 256,835.98 × 109,640.89
  4. Step 4: Simplify right side
    186,118.66x = 28,159,724,883.02
  5. Step 5: Solve for x
    x = 28,159,724,883.02/186,118.66
  6. Step 6: Final answer
    x = 151,299.85

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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.