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Finding the Fourth Proportional to 543,379.25, 814,008.57 and 355,822.13

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Solution

The fourth proportional to 543,379.25, 814,008.57 and 355,822.13 is: 533,038.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,379.25 : 814,008.57 = 355,822.13 : x
  2. Step 2: Convert to fraction form
    543,379.25/814,008.57 = 355,822.13/x
  3. Step 3: Cross multiply
    543,379.25x = 814,008.57 × 355,822.13
  4. Step 4: Simplify right side
    543,379.25x = 289,642,259,145.61
  5. Step 5: Solve for x
    x = 289,642,259,145.61/543,379.25
  6. Step 6: Final answer
    x = 533,038.87

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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.