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Finding the Fourth Proportional to 775,461.31, 1,069,978.19 and 453,109.14

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Solution

The fourth proportional to 775,461.31, 1,069,978.19 and 453,109.14 is: 625,198.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,461.31 : 1,069,978.19 = 453,109.14 : x
  2. Step 2: Convert to fraction form
    775,461.31/1,069,978.19 = 453,109.14/x
  3. Step 3: Cross multiply
    775,461.31x = 1,069,978.19 × 453,109.14
  4. Step 4: Simplify right side
    775,461.31x = 484,816,895,224.11
  5. Step 5: Solve for x
    x = 484,816,895,224.11/775,461.31
  6. Step 6: Final answer
    x = 625,198.05

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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.