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Finding the Fourth Proportional to 539,339.10, 744,435.99 and 313,057.50

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Solution

The fourth proportional to 539,339.10, 744,435.99 and 313,057.50 is: 432,105.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,339.10 : 744,435.99 = 313,057.50 : x
  2. Step 2: Convert to fraction form
    539,339.10/744,435.99 = 313,057.50/x
  3. Step 3: Cross multiply
    539,339.10x = 744,435.99 × 313,057.50
  4. Step 4: Simplify right side
    539,339.10x = 233,051,269,939.43
  5. Step 5: Solve for x
    x = 233,051,269,939.43/539,339.10
  6. Step 6: Final answer
    x = 432,105.27

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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.