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Finding the Fourth Proportional to 857,765.40, 1,183,693.40 and 495,177

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Solution

The fourth proportional to 857,765.40, 1,183,693.40 and 495,177 is: 683,331.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,765.40 : 1,183,693.40 = 495,177 : x
  2. Step 2: Convert to fraction form
    857,765.40/1,183,693.40 = 495,177/x
  3. Step 3: Cross multiply
    857,765.40x = 1,183,693.40 × 495,177
  4. Step 4: Simplify right side
    857,765.40x = 586,137,746,731.80
  5. Step 5: Solve for x
    x = 586,137,746,731.80/857,765.40
  6. Step 6: Final answer
    x = 683,331.07

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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.