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Finding the Fourth Proportional to 511,232.40, 705,553.20 and 307,349.73

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Solution

The fourth proportional to 511,232.40, 705,553.20 and 307,349.73 is: 424,174.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,232.40 : 705,553.20 = 307,349.73 : x
  2. Step 2: Convert to fraction form
    511,232.40/705,553.20 = 307,349.73/x
  3. Step 3: Cross multiply
    511,232.40x = 705,553.20 × 307,349.73
  4. Step 4: Simplify right side
    511,232.40x = 216,851,585,520.64
  5. Step 5: Solve for x
    x = 216,851,585,520.64/511,232.40
  6. Step 6: Final answer
    x = 424,174.18

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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.