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Finding the Fourth Proportional to 923,672.45, 1,289,992.15 and 923,672.45

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Solution

The fourth proportional to 923,672.45, 1,289,992.15 and 923,672.45 is: 1,289,992.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,672.45 : 1,289,992.15 = 923,672.45 : x
  2. Step 2: Convert to fraction form
    923,672.45/1,289,992.15 = 923,672.45/x
  3. Step 3: Cross multiply
    923,672.45x = 1,289,992.15 × 923,672.45
  4. Step 4: Simplify right side
    923,672.45x = 1,191,530,209,671.27
  5. Step 5: Solve for x
    x = 1,191,530,209,671.27/923,672.45
  6. Step 6: Final answer
    x = 1,289,992.15

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.