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Finding the Fourth Proportional to 524,203.30, 785,138.55 and 430,891.30

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Solution

The fourth proportional to 524,203.30, 785,138.55 and 430,891.30 is: 645,378.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,203.30 : 785,138.55 = 430,891.30 : x
  2. Step 2: Convert to fraction form
    524,203.30/785,138.55 = 430,891.30/x
  3. Step 3: Cross multiply
    524,203.30x = 785,138.55 × 430,891.30
  4. Step 4: Simplify right side
    524,203.30x = 338,309,370,489.62
  5. Step 5: Solve for x
    x = 338,309,370,489.62/524,203.30
  6. Step 6: Final answer
    x = 645,378.18

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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.