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Finding the Fourth Proportional to 186,459.86, 279,634.20 and 66,495.62

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Solution

The fourth proportional to 186,459.86, 279,634.20 and 66,495.62 is: 99,723.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,459.86 : 279,634.20 = 66,495.62 : x
  2. Step 2: Convert to fraction form
    186,459.86/279,634.20 = 66,495.62/x
  3. Step 3: Cross multiply
    186,459.86x = 279,634.20 × 66,495.62
  4. Step 4: Simplify right side
    186,459.86x = 18,594,448,104.03
  5. Step 5: Solve for x
    x = 18,594,448,104.03/186,459.86
  6. Step 6: Final answer
    x = 99,723.60

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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.