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Finding the Fourth Proportional to 626,151.53, 864,089.30 and 354,213.68

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Solution

The fourth proportional to 626,151.53, 864,089.30 and 354,213.68 is: 488,814.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,151.53 : 864,089.30 = 354,213.68 : x
  2. Step 2: Convert to fraction form
    626,151.53/864,089.30 = 354,213.68/x
  3. Step 3: Cross multiply
    626,151.53x = 864,089.30 × 354,213.68
  4. Step 4: Simplify right side
    626,151.53x = 306,072,247,366.71
  5. Step 5: Solve for x
    x = 306,072,247,366.71/626,151.53
  6. Step 6: Final answer
    x = 488,814.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.