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Finding the Fourth Proportional to 319,670.88, 441,186.48 and 192,415.20

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Solution

The fourth proportional to 319,670.88, 441,186.48 and 192,415.20 is: 265,557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,670.88 : 441,186.48 = 192,415.20 : x
  2. Step 2: Convert to fraction form
    319,670.88/441,186.48 = 192,415.20/x
  3. Step 3: Cross multiply
    319,670.88x = 441,186.48 × 192,415.20
  4. Step 4: Simplify right side
    319,670.88x = 84,890,984,786.50
  5. Step 5: Solve for x
    x = 84,890,984,786.50/319,670.88
  6. Step 6: Final answer
    x = 265,557.45

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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.