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Finding the Fourth Proportional to 702,688.44, 969,715.26 and 392,591.64

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Solution

The fourth proportional to 702,688.44, 969,715.26 and 392,591.64 is: 541,779.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,688.44 : 969,715.26 = 392,591.64 : x
  2. Step 2: Convert to fraction form
    702,688.44/969,715.26 = 392,591.64/x
  3. Step 3: Cross multiply
    702,688.44x = 969,715.26 × 392,591.64
  4. Step 4: Simplify right side
    702,688.44x = 380,702,104,256.43
  5. Step 5: Solve for x
    x = 380,702,104,256.43/702,688.44
  6. Step 6: Final answer
    x = 541,779.38

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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.