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Finding the Fourth Proportional to 651,568.56, 978,427.71 and 439,697.67

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Solution

The fourth proportional to 651,568.56, 978,427.71 and 439,697.67 is: 660,271.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,568.56 : 978,427.71 = 439,697.67 : x
  2. Step 2: Convert to fraction form
    651,568.56/978,427.71 = 439,697.67/x
  3. Step 3: Cross multiply
    651,568.56x = 978,427.71 × 439,697.67
  4. Step 4: Simplify right side
    651,568.56x = 430,212,384,350.44
  5. Step 5: Solve for x
    x = 430,212,384,350.44/651,568.56
  6. Step 6: Final answer
    x = 660,271.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.