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Finding the Fourth Proportional to 328,685.44, 453,578.52 and 185,441.80

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Solution

The fourth proportional to 328,685.44, 453,578.52 and 185,441.80 is: 255,905.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,685.44 : 453,578.52 = 185,441.80 : x
  2. Step 2: Convert to fraction form
    328,685.44/453,578.52 = 185,441.80/x
  3. Step 3: Cross multiply
    328,685.44x = 453,578.52 × 185,441.80
  4. Step 4: Simplify right side
    328,685.44x = 84,112,417,190.14
  5. Step 5: Solve for x
    x = 84,112,417,190.14/328,685.44
  6. Step 6: Final answer
    x = 255,905.52

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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.