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Finding the Fourth Proportional to 506,189.81, 698,556.52 and 279,849.89

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Solution

The fourth proportional to 506,189.81, 698,556.52 and 279,849.89 is: 386,200.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,189.81 : 698,556.52 = 279,849.89 : x
  2. Step 2: Convert to fraction form
    506,189.81/698,556.52 = 279,849.89/x
  3. Step 3: Cross multiply
    506,189.81x = 698,556.52 × 279,849.89
  4. Step 4: Simplify right side
    506,189.81x = 195,490,967,376.99
  5. Step 5: Solve for x
    x = 195,490,967,376.99/506,189.81
  6. Step 6: Final answer
    x = 386,200.91

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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.