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Finding the Fourth Proportional to 783,338.64, 1,081,181.16 and 443,994

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Solution

The fourth proportional to 783,338.64, 1,081,181.16 and 443,994 is: 612,810.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,338.64 : 1,081,181.16 = 443,994 : x
  2. Step 2: Convert to fraction form
    783,338.64/1,081,181.16 = 443,994/x
  3. Step 3: Cross multiply
    783,338.64x = 1,081,181.16 × 443,994
  4. Step 4: Simplify right side
    783,338.64x = 480,037,947,953.04
  5. Step 5: Solve for x
    x = 480,037,947,953.04/783,338.64
  6. Step 6: Final answer
    x = 612,810.25

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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.