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Finding the Fourth Proportional to 399,771.04, 551,630.74 and 256,724.84

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Solution

The fourth proportional to 399,771.04, 551,630.74 and 256,724.84 is: 354,246.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,771.04 : 551,630.74 = 256,724.84 : x
  2. Step 2: Convert to fraction form
    399,771.04/551,630.74 = 256,724.84/x
  3. Step 3: Cross multiply
    399,771.04x = 551,630.74 × 256,724.84
  4. Step 4: Simplify right side
    399,771.04x = 141,617,309,423.80
  5. Step 5: Solve for x
    x = 141,617,309,423.80/399,771.04
  6. Step 6: Final answer
    x = 354,246.04

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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.