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Finding the Fourth Proportional to 543,732.10, 813,985.35 and 404,109.70

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Solution

The fourth proportional to 543,732.10, 813,985.35 and 404,109.70 is: 604,965.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,732.10 : 813,985.35 = 404,109.70 : x
  2. Step 2: Convert to fraction form
    543,732.10/813,985.35 = 404,109.70/x
  3. Step 3: Cross multiply
    543,732.10x = 813,985.35 × 404,109.70
  4. Step 4: Simplify right side
    543,732.10x = 328,939,375,592.90
  5. Step 5: Solve for x
    x = 328,939,375,592.90/543,732.10
  6. Step 6: Final answer
    x = 604,965.89

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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.