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Finding the Fourth Proportional to 624,470.11, 861,789.62 and 382,705.98

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Solution

The fourth proportional to 624,470.11, 861,789.62 and 382,705.98 is: 528,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,470.11 : 861,789.62 = 382,705.98 : x
  2. Step 2: Convert to fraction form
    624,470.11/861,789.62 = 382,705.98/x
  3. Step 3: Cross multiply
    624,470.11x = 861,789.62 × 382,705.98
  4. Step 4: Simplify right side
    624,470.11x = 329,812,041,075.93
  5. Step 5: Solve for x
    x = 329,812,041,075.93/624,470.11
  6. Step 6: Final answer
    x = 528,147.04

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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.