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Finding the Fourth Proportional to 7,777,143.76, 11,665,715.64 and 7,777,143.76

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Solution

The fourth proportional to 7,777,143.76, 11,665,715.64 and 7,777,143.76 is: 11,665,715.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777,143.76 : 11,665,715.64 = 7,777,143.76 : x
  2. Step 2: Convert to fraction form
    7,777,143.76/11,665,715.64 = 7,777,143.76/x
  3. Step 3: Cross multiply
    7,777,143.76x = 11,665,715.64 × 7,777,143.76
  4. Step 4: Simplify right side
    7,777,143.76x = 90,725,947,556,674.69
  5. Step 5: Solve for x
    x = 90,725,947,556,674.69/7,777,143.76
  6. Step 6: Final answer
    x = 11,665,715.64

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1.5x scale

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.