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Finding the Fourth Proportional to 7,173,872.82, 9,903,478.82 and 4,970,406.33

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Solution

The fourth proportional to 7,173,872.82, 9,903,478.82 and 4,970,406.33 is: 6,861,609.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173,872.82 : 9,903,478.82 = 4,970,406.33 : x
  2. Step 2: Convert to fraction form
    7,173,872.82/9,903,478.82 = 4,970,406.33/x
  3. Step 3: Cross multiply
    7,173,872.82x = 9,903,478.82 × 4,970,406.33
  4. Step 4: Simplify right side
    7,173,872.82x = 49,224,313,791,096.90
  5. Step 5: Solve for x
    x = 49,224,313,791,096.90/7,173,872.82
  6. Step 6: Final answer
    x = 6,861,609.49

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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.