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Finding the Fourth Proportional to 528,778.33, 729,476.89 and 356,640.17

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Solution

The fourth proportional to 528,778.33, 729,476.89 and 356,640.17 is: 492,003.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,778.33 : 729,476.89 = 356,640.17 : x
  2. Step 2: Convert to fraction form
    528,778.33/729,476.89 = 356,640.17/x
  3. Step 3: Cross multiply
    528,778.33x = 729,476.89 × 356,640.17
  4. Step 4: Simplify right side
    528,778.33x = 260,160,757,521.69
  5. Step 5: Solve for x
    x = 260,160,757,521.69/528,778.33
  6. Step 6: Final answer
    x = 492,003.44

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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.