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Finding the Fourth Proportional to 443,533.70, 665,773.99 and 190,939.25

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Solution

The fourth proportional to 443,533.70, 665,773.99 and 190,939.25 is: 286,612.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,533.70 : 665,773.99 = 190,939.25 : x
  2. Step 2: Convert to fraction form
    443,533.70/665,773.99 = 190,939.25/x
  3. Step 3: Cross multiply
    443,533.70x = 665,773.99 × 190,939.25
  4. Step 4: Simplify right side
    443,533.70x = 127,122,382,513.89
  5. Step 5: Solve for x
    x = 127,122,382,513.89/443,533.70
  6. Step 6: Final answer
    x = 286,612.68

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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.