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Finding the Fourth Proportional to 569,717.89, 786,178.74 and 311,543.62

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Solution

The fourth proportional to 569,717.89, 786,178.74 and 311,543.62 is: 429,912.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,717.89 : 786,178.74 = 311,543.62 : x
  2. Step 2: Convert to fraction form
    569,717.89/786,178.74 = 311,543.62/x
  3. Step 3: Cross multiply
    569,717.89x = 786,178.74 × 311,543.62
  4. Step 4: Simplify right side
    569,717.89x = 244,928,970,626.64
  5. Step 5: Solve for x
    x = 244,928,970,626.64/569,717.89
  6. Step 6: Final answer
    x = 429,912.73

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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.