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Finding the Fourth Proportional to 821,672.30, 1,232,508.45 and 821,672.30

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Solution

The fourth proportional to 821,672.30, 1,232,508.45 and 821,672.30 is: 1,232,508.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,672.30 : 1,232,508.45 = 821,672.30 : x
  2. Step 2: Convert to fraction form
    821,672.30/1,232,508.45 = 821,672.30/x
  3. Step 3: Cross multiply
    821,672.30x = 1,232,508.45 × 821,672.30
  4. Step 4: Simplify right side
    821,672.30x = 1,012,718,052,880.94
  5. Step 5: Solve for x
    x = 1,012,718,052,880.94/821,672.30
  6. Step 6: Final answer
    x = 1,232,508.45

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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.