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Finding the Fourth Proportional to 519,855.44, 778,008.94 and 435,710.62

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Solution

The fourth proportional to 519,855.44, 778,008.94 and 435,710.62 is: 652,078.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,855.44 : 778,008.94 = 435,710.62 : x
  2. Step 2: Convert to fraction form
    519,855.44/778,008.94 = 435,710.62/x
  3. Step 3: Cross multiply
    519,855.44x = 778,008.94 × 435,710.62
  4. Step 4: Simplify right side
    519,855.44x = 338,986,757,612.94
  5. Step 5: Solve for x
    x = 338,986,757,612.94/519,855.44
  6. Step 6: Final answer
    x = 652,078.89

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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.