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Finding the Fourth Proportional to 624,614.19, 863,420.31 and 557,298.33

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Solution

The fourth proportional to 624,614.19, 863,420.31 and 557,298.33 is: 770,367.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,614.19 : 863,420.31 = 557,298.33 : x
  2. Step 2: Convert to fraction form
    624,614.19/863,420.31 = 557,298.33/x
  3. Step 3: Cross multiply
    624,614.19x = 863,420.31 × 557,298.33
  4. Step 4: Simplify right side
    624,614.19x = 481,182,696,851.08
  5. Step 5: Solve for x
    x = 481,182,696,851.08/624,614.19
  6. Step 6: Final answer
    x = 770,367.86

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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.