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Finding the Fourth Proportional to 5,219,489.70, 7,829,234.55 and 4,672,059.30

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Solution

The fourth proportional to 5,219,489.70, 7,829,234.55 and 4,672,059.30 is: 7,008,088.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219,489.70 : 7,829,234.55 = 4,672,059.30 : x
  2. Step 2: Convert to fraction form
    5,219,489.70/7,829,234.55 = 4,672,059.30/x
  3. Step 3: Cross multiply
    5,219,489.70x = 7,829,234.55 × 4,672,059.30
  4. Step 4: Simplify right side
    5,219,489.70x = 36,578,648,091,208.81
  5. Step 5: Solve for x
    x = 36,578,648,091,208.81/5,219,489.70
  6. Step 6: Final answer
    x = 7,008,088.95

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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.