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Finding the Fourth Proportional to 906,713.92, 1,250,628.42 and 785,640.16

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Solution

The fourth proportional to 906,713.92, 1,250,628.42 and 785,640.16 is: 1,083,631.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,713.92 : 1,250,628.42 = 785,640.16 : x
  2. Step 2: Convert to fraction form
    906,713.92/1,250,628.42 = 785,640.16/x
  3. Step 3: Cross multiply
    906,713.92x = 1,250,628.42 × 785,640.16
  4. Step 4: Simplify right side
    906,713.92x = 982,543,911,989.35
  5. Step 5: Solve for x
    x = 982,543,911,989.35/906,713.92
  6. Step 6: Final answer
    x = 1,083,631.66

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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.