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Finding the Fourth Proportional to 7,021,167.15, 10,531,750.73 and 7,021,167.15

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Solution

The fourth proportional to 7,021,167.15, 10,531,750.73 and 7,021,167.15 is: 10,531,750.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021,167.15 : 10,531,750.73 = 7,021,167.15 : x
  2. Step 2: Convert to fraction form
    7,021,167.15/10,531,750.73 = 7,021,167.15/x
  3. Step 3: Cross multiply
    7,021,167.15x = 10,531,750.73 × 7,021,167.15
  4. Step 4: Simplify right side
    7,021,167.15x = 73,945,182,222,358.69
  5. Step 5: Solve for x
    x = 73,945,182,222,358.69/7,021,167.15
  6. Step 6: Final answer
    x = 10,531,750.73

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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.