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Finding the Fourth Proportional to 674,372.70, 1,008,606.60 and 514,940.40

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Solution

The fourth proportional to 674,372.70, 1,008,606.60 and 514,940.40 is: 770,156.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,372.70 : 1,008,606.60 = 514,940.40 : x
  2. Step 2: Convert to fraction form
    674,372.70/1,008,606.60 = 514,940.40/x
  3. Step 3: Cross multiply
    674,372.70x = 1,008,606.60 × 514,940.40
  4. Step 4: Simplify right side
    674,372.70x = 519,372,286,046.64
  5. Step 5: Solve for x
    x = 519,372,286,046.64/674,372.70
  6. Step 6: Final answer
    x = 770,156.16

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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.