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Finding the Fourth Proportional to 319,571.55, 441,008.30 and 176,331.56

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Solution

The fourth proportional to 319,571.55, 441,008.30 and 176,331.56 is: 243,337.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,571.55 : 441,008.30 = 176,331.56 : x
  2. Step 2: Convert to fraction form
    319,571.55/441,008.30 = 176,331.56/x
  3. Step 3: Cross multiply
    319,571.55x = 441,008.30 × 176,331.56
  4. Step 4: Simplify right side
    319,571.55x = 77,763,679,747.74
  5. Step 5: Solve for x
    x = 77,763,679,747.74/319,571.55
  6. Step 6: Final answer
    x = 243,337.31

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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.