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Finding the Fourth Proportional to 272,783,999.70, 409,175,999.55 and 186,690,557.70

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Solution

The fourth proportional to 272,783,999.70, 409,175,999.55 and 186,690,557.70 is: 280,035,836.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,783,999.70 : 409,175,999.55 = 186,690,557.70 : x
  2. Step 2: Convert to fraction form
    272,783,999.70/409,175,999.55 = 186,690,557.70/x
  3. Step 3: Cross multiply
    272,783,999.70x = 409,175,999.55 × 186,690,557.70
  4. Step 4: Simplify right side
    272,783,999.70x = 76,389,295,553,444,448
  5. Step 5: Solve for x
    x = 76,389,295,553,444,448/272,783,999.70
  6. Step 6: Final answer
    x = 280,035,836.55

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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.