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Finding the Fourth Proportional to 707,571.20, 976,338.33 and 405,706.88

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Solution

The fourth proportional to 707,571.20, 976,338.33 and 405,706.88 is: 559,812.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,571.20 : 976,338.33 = 405,706.88 : x
  2. Step 2: Convert to fraction form
    707,571.20/976,338.33 = 405,706.88/x
  3. Step 3: Cross multiply
    707,571.20x = 976,338.33 × 405,706.88
  4. Step 4: Simplify right side
    707,571.20x = 396,107,172,807.02
  5. Step 5: Solve for x
    x = 396,107,172,807.02/707,571.20
  6. Step 6: Final answer
    x = 559,812.46

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1.5x scale

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.