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Finding the Fourth Proportional to 558,433.28, 770,463.92 and 316,696.88

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Solution

The fourth proportional to 558,433.28, 770,463.92 and 316,696.88 is: 436,943.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,433.28 : 770,463.92 = 316,696.88 : x
  2. Step 2: Convert to fraction form
    558,433.28/770,463.92 = 316,696.88/x
  3. Step 3: Cross multiply
    558,433.28x = 770,463.92 × 316,696.88
  4. Step 4: Simplify right side
    558,433.28x = 244,003,519,616.57
  5. Step 5: Solve for x
    x = 244,003,519,616.57/558,433.28
  6. Step 6: Final answer
    x = 436,943.01

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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.