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Finding the Fourth Proportional to 516,782.48, 775,172.76 and 137,703.44

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Solution

The fourth proportional to 516,782.48, 775,172.76 and 137,703.44 is: 206,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,782.48 : 775,172.76 = 137,703.44 : x
  2. Step 2: Convert to fraction form
    516,782.48/775,172.76 = 137,703.44/x
  3. Step 3: Cross multiply
    516,782.48x = 775,172.76 × 137,703.44
  4. Step 4: Simplify right side
    516,782.48x = 106,743,955,646.29
  5. Step 5: Solve for x
    x = 106,743,955,646.29/516,782.48
  6. Step 6: Final answer
    x = 206,554.90

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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.