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Finding the Fourth Proportional to 652,570.97, 978,817.23 and 388,015.11

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Solution

The fourth proportional to 652,570.97, 978,817.23 and 388,015.11 is: 581,999.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,570.97 : 978,817.23 = 388,015.11 : x
  2. Step 2: Convert to fraction form
    652,570.97/978,817.23 = 388,015.11/x
  3. Step 3: Cross multiply
    652,570.97x = 978,817.23 × 388,015.11
  4. Step 4: Simplify right side
    652,570.97x = 379,795,875,168.35
  5. Step 5: Solve for x
    x = 379,795,875,168.35/652,570.97
  6. Step 6: Final answer
    x = 581,999.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.