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Finding the Fourth Proportional to 186,622.60, 279,933.90 and 103,678.60

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Solution

The fourth proportional to 186,622.60, 279,933.90 and 103,678.60 is: 155,517.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,622.60 : 279,933.90 = 103,678.60 : x
  2. Step 2: Convert to fraction form
    186,622.60/279,933.90 = 103,678.60/x
  3. Step 3: Cross multiply
    186,622.60x = 279,933.90 × 103,678.60
  4. Step 4: Simplify right side
    186,622.60x = 29,023,154,844.54
  5. Step 5: Solve for x
    x = 29,023,154,844.54/186,622.60
  6. Step 6: Final answer
    x = 155,517.90

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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.