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Finding the Fourth Proportional to 6,321,960.72, 8,724,328.02 and 3,421,350.72

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Solution

The fourth proportional to 6,321,960.72, 8,724,328.02 and 3,421,350.72 is: 4,721,476.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,321,960.72 : 8,724,328.02 = 3,421,350.72 : x
  2. Step 2: Convert to fraction form
    6,321,960.72/8,724,328.02 = 3,421,350.72/x
  3. Step 3: Cross multiply
    6,321,960.72x = 8,724,328.02 × 3,421,350.72
  4. Step 4: Simplify right side
    6,321,960.72x = 29,848,985,952,743.18
  5. Step 5: Solve for x
    x = 29,848,985,952,743.18/6,321,960.72
  6. Step 6: Final answer
    x = 4,721,476.02

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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.