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Finding the Fourth Proportional to 543,397.17, 813,188.79 and 436,518.48

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Solution

The fourth proportional to 543,397.17, 813,188.79 and 436,518.48 is: 653,245.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,397.17 : 813,188.79 = 436,518.48 : x
  2. Step 2: Convert to fraction form
    543,397.17/813,188.79 = 436,518.48/x
  3. Step 3: Cross multiply
    543,397.17x = 813,188.79 × 436,518.48
  4. Step 4: Simplify right side
    543,397.17x = 354,971,934,563.84
  5. Step 5: Solve for x
    x = 354,971,934,563.84/543,397.17
  6. Step 6: Final answer
    x = 653,245.83

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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.