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Finding the Fourth Proportional to 579,837.78, 868,624.83 and 399,497.76

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Solution

The fourth proportional to 579,837.78, 868,624.83 and 399,497.76 is: 598,466.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,837.78 : 868,624.83 = 399,497.76 : x
  2. Step 2: Convert to fraction form
    579,837.78/868,624.83 = 399,497.76/x
  3. Step 3: Cross multiply
    579,837.78x = 868,624.83 × 399,497.76
  4. Step 4: Simplify right side
    579,837.78x = 347,013,673,865.38
  5. Step 5: Solve for x
    x = 347,013,673,865.38/579,837.78
  6. Step 6: Final answer
    x = 598,466.82

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1.5x scale

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.