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Finding the Fourth Proportional to 328,520.61, 453,357.81 and 185,280.21

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Solution

The fourth proportional to 328,520.61, 453,357.81 and 185,280.21 is: 255,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,520.61 : 453,357.81 = 185,280.21 : x
  2. Step 2: Convert to fraction form
    328,520.61/453,357.81 = 185,280.21/x
  3. Step 3: Cross multiply
    328,520.61x = 453,357.81 × 185,280.21
  4. Step 4: Simplify right side
    328,520.61x = 83,998,230,241.94
  5. Step 5: Solve for x
    x = 83,998,230,241.94/328,520.61
  6. Step 6: Final answer
    x = 255,686.33

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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.