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Finding the Fourth Proportional to 819,833.94, 1,131,372.56 and 457,248.48

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Solution

The fourth proportional to 819,833.94, 1,131,372.56 and 457,248.48 is: 631,003.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,833.94 : 1,131,372.56 = 457,248.48 : x
  2. Step 2: Convert to fraction form
    819,833.94/1,131,372.56 = 457,248.48/x
  3. Step 3: Cross multiply
    819,833.94x = 1,131,372.56 × 457,248.48
  4. Step 4: Simplify right side
    819,833.94x = 517,318,381,087.47
  5. Step 5: Solve for x
    x = 517,318,381,087.47/819,833.94
  6. Step 6: Final answer
    x = 631,003.86

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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.