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Finding the Fourth Proportional to 382,805.60, 528,266.54 and 213,039.73

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Solution

The fourth proportional to 382,805.60, 528,266.54 and 213,039.73 is: 293,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,805.60 : 528,266.54 = 213,039.73 : x
  2. Step 2: Convert to fraction form
    382,805.60/528,266.54 = 213,039.73/x
  3. Step 3: Cross multiply
    382,805.60x = 528,266.54 × 213,039.73
  4. Step 4: Simplify right side
    382,805.60x = 112,541,757,343.10
  5. Step 5: Solve for x
    x = 112,541,757,343.10/382,805.60
  6. Step 6: Final answer
    x = 293,991.93

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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.