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Finding the Fourth Proportional to 707,570.73, 1,061,247.31 and 387,880.99

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Solution

The fourth proportional to 707,570.73, 1,061,247.31 and 387,880.99 is: 581,761.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,570.73 : 1,061,247.31 = 387,880.99 : x
  2. Step 2: Convert to fraction form
    707,570.73/1,061,247.31 = 387,880.99/x
  3. Step 3: Cross multiply
    707,570.73x = 1,061,247.31 × 387,880.99
  4. Step 4: Simplify right side
    707,570.73x = 411,637,653,614.82
  5. Step 5: Solve for x
    x = 411,637,653,614.82/707,570.73
  6. Step 6: Final answer
    x = 581,761.85

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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.