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Finding the Fourth Proportional to 805,266, 1,111,336.20 and 447,639.12

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Solution

The fourth proportional to 805,266, 1,111,336.20 and 447,639.12 is: 617,780.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,266 : 1,111,336.20 = 447,639.12 : x
  2. Step 2: Convert to fraction form
    805,266/1,111,336.20 = 447,639.12/x
  3. Step 3: Cross multiply
    805,266x = 1,111,336.20 × 447,639.12
  4. Step 4: Simplify right side
    805,266x = 497,477,558,592.14
  5. Step 5: Solve for x
    x = 497,477,558,592.14/805,266
  6. Step 6: Final answer
    x = 617,780.41

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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.