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Finding the Fourth Proportional to 608,595.16, 839,578.35 and 393,804.58

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Solution

The fourth proportional to 608,595.16, 839,578.35 and 393,804.58 is: 543,267.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,595.16 : 839,578.35 = 393,804.58 : x
  2. Step 2: Convert to fraction form
    608,595.16/839,578.35 = 393,804.58/x
  3. Step 3: Cross multiply
    608,595.16x = 839,578.35 × 393,804.58
  4. Step 4: Simplify right side
    608,595.16x = 330,629,799,498.84
  5. Step 5: Solve for x
    x = 330,629,799,498.84/608,595.16
  6. Step 6: Final answer
    x = 543,267.22

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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.