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Finding the Fourth Proportional to 985,313.49, 1,359,772.97 and 622,605

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Solution

The fourth proportional to 985,313.49, 1,359,772.97 and 622,605 is: 859,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,313.49 : 1,359,772.97 = 622,605 : x
  2. Step 2: Convert to fraction form
    985,313.49/1,359,772.97 = 622,605/x
  3. Step 3: Cross multiply
    985,313.49x = 1,359,772.97 × 622,605
  4. Step 4: Simplify right side
    985,313.49x = 846,601,446,873.83
  5. Step 5: Solve for x
    x = 846,601,446,873.83/985,313.49
  6. Step 6: Final answer
    x = 859,220.40

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1.5x scale

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.