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Finding the Fourth Proportional to 608,310.68, 839,189.71 and 393,520.01

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Solution

The fourth proportional to 608,310.68, 839,189.71 and 393,520.01 is: 542,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,310.68 : 839,189.71 = 393,520.01 : x
  2. Step 2: Convert to fraction form
    608,310.68/839,189.71 = 393,520.01/x
  3. Step 3: Cross multiply
    608,310.68x = 839,189.71 × 393,520.01
  4. Step 4: Simplify right side
    608,310.68x = 330,237,943,071.10
  5. Step 5: Solve for x
    x = 330,237,943,071.10/608,310.68
  6. Step 6: Final answer
    x = 542,877.11

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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.