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Finding the Fourth Proportional to 483,693.12, 667,510.27 and 279,724.59

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Solution

The fourth proportional to 483,693.12, 667,510.27 and 279,724.59 is: 386,027.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,693.12 : 667,510.27 = 279,724.59 : x
  2. Step 2: Convert to fraction form
    483,693.12/667,510.27 = 279,724.59/x
  3. Step 3: Cross multiply
    483,693.12x = 667,510.27 × 279,724.59
  4. Step 4: Simplify right side
    483,693.12x = 186,719,035,897.23
  5. Step 5: Solve for x
    x = 186,719,035,897.23/483,693.12
  6. Step 6: Final answer
    x = 386,027.89

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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.