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Finding the Fourth Proportional to 319,816.75, 441,386 and 185,680.75

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Solution

The fourth proportional to 319,816.75, 441,386 and 185,680.75 is: 256,262.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,816.75 : 441,386 = 185,680.75 : x
  2. Step 2: Convert to fraction form
    319,816.75/441,386 = 185,680.75/x
  3. Step 3: Cross multiply
    319,816.75x = 441,386 × 185,680.75
  4. Step 4: Simplify right side
    319,816.75x = 81,956,883,519.50
  5. Step 5: Solve for x
    x = 81,956,883,519.50/319,816.75
  6. Step 6: Final answer
    x = 256,262.01

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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.