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Finding the Fourth Proportional to 7,226,289.48, 9,971,560.98 and 4,171,487.88

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Solution

The fourth proportional to 7,226,289.48, 9,971,560.98 and 4,171,487.88 is: 5,756,238.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,226,289.48 : 9,971,560.98 = 4,171,487.88 : x
  2. Step 2: Convert to fraction form
    7,226,289.48/9,971,560.98 = 4,171,487.88/x
  3. Step 3: Cross multiply
    7,226,289.48x = 9,971,560.98 × 4,171,487.88
  4. Step 4: Simplify right side
    7,226,289.48x = 41,596,245,772,750.92
  5. Step 5: Solve for x
    x = 41,596,245,772,750.92/7,226,289.48
  6. Step 6: Final answer
    x = 5,756,238.51

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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.