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Finding the Fourth Proportional to 186,861.30, 280,125.30 and 68,505.06

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Solution

The fourth proportional to 186,861.30, 280,125.30 and 68,505.06 is: 102,696.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,861.30 : 280,125.30 = 68,505.06 : x
  2. Step 2: Convert to fraction form
    186,861.30/280,125.30 = 68,505.06/x
  3. Step 3: Cross multiply
    186,861.30x = 280,125.30 × 68,505.06
  4. Step 4: Simplify right side
    186,861.30x = 19,190,000,484.02
  5. Step 5: Solve for x
    x = 19,190,000,484.02/186,861.30
  6. Step 6: Final answer
    x = 102,696.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.