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Finding the Fourth Proportional to 620,542.40, 856,450.16 and 517,012.52

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Solution

The fourth proportional to 620,542.40, 856,450.16 and 517,012.52 is: 713,561.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,542.40 : 856,450.16 = 517,012.52 : x
  2. Step 2: Convert to fraction form
    620,542.40/856,450.16 = 517,012.52/x
  3. Step 3: Cross multiply
    620,542.40x = 856,450.16 × 517,012.52
  4. Step 4: Simplify right side
    620,542.40x = 442,795,455,476.00
  5. Step 5: Solve for x
    x = 442,795,455,476.00/620,542.40
  6. Step 6: Final answer
    x = 713,561.97

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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.