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Finding the Fourth Proportional to 399,772.04, 551,632.11 and 256,725.84

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Solution

The fourth proportional to 399,772.04, 551,632.11 and 256,725.84 is: 354,247.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,772.04 : 551,632.11 = 256,725.84 : x
  2. Step 2: Convert to fraction form
    399,772.04/551,632.11 = 256,725.84/x
  3. Step 3: Cross multiply
    399,772.04x = 551,632.11 × 256,725.84
  4. Step 4: Simplify right side
    399,772.04x = 141,618,216,810.72
  5. Step 5: Solve for x
    x = 141,618,216,810.72/399,772.04
  6. Step 6: Final answer
    x = 354,247.43

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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.