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Finding the Fourth Proportional to 579,368.96, 869,119.05 and 519,838.82

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Solution

The fourth proportional to 579,368.96, 869,119.05 and 519,838.82 is: 779,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,368.96 : 869,119.05 = 519,838.82 : x
  2. Step 2: Convert to fraction form
    579,368.96/869,119.05 = 519,838.82/x
  3. Step 3: Cross multiply
    579,368.96x = 869,119.05 × 519,838.82
  4. Step 4: Simplify right side
    579,368.96x = 451,801,821,391.52
  5. Step 5: Solve for x
    x = 451,801,821,391.52/579,368.96
  6. Step 6: Final answer
    x = 779,817.10

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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.