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Finding the Fourth Proportional to 621,313.20, 929,896.20 and 434,689.20

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Solution

The fourth proportional to 621,313.20, 929,896.20 and 434,689.20 is: 650,583.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,313.20 : 929,896.20 = 434,689.20 : x
  2. Step 2: Convert to fraction form
    621,313.20/929,896.20 = 434,689.20/x
  3. Step 3: Cross multiply
    621,313.20x = 929,896.20 × 434,689.20
  4. Step 4: Simplify right side
    621,313.20x = 404,215,835,261.04
  5. Step 5: Solve for x
    x = 404,215,835,261.04/621,313.20
  6. Step 6: Final answer
    x = 650,583.05

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1.5x scale

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.