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Finding the Fourth Proportional to 591,431.81, 816,192.71 and 329,793.15

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Solution

The fourth proportional to 591,431.81, 816,192.71 and 329,793.15 is: 455,123.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,431.81 : 816,192.71 = 329,793.15 : x
  2. Step 2: Convert to fraction form
    591,431.81/816,192.71 = 329,793.15/x
  3. Step 3: Cross multiply
    591,431.81x = 816,192.71 × 329,793.15
  4. Step 4: Simplify right side
    591,431.81x = 269,174,762,396.91
  5. Step 5: Solve for x
    x = 269,174,762,396.91/591,431.81
  6. Step 6: Final answer
    x = 455,123.91

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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.