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Finding the Fourth Proportional to 679,252.70, 938,190.83 and 495,199.79

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Solution

The fourth proportional to 679,252.70, 938,190.83 and 495,199.79 is: 683,975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,252.70 : 938,190.83 = 495,199.79 : x
  2. Step 2: Convert to fraction form
    679,252.70/938,190.83 = 495,199.79/x
  3. Step 3: Cross multiply
    679,252.70x = 938,190.83 × 495,199.79
  4. Step 4: Simplify right side
    679,252.70x = 464,591,894,828.97
  5. Step 5: Solve for x
    x = 464,591,894,828.97/679,252.70
  6. Step 6: Final answer
    x = 683,975.05

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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.