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Finding the Fourth Proportional to 608,645.73, 839,780.19 and 393,526.94

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Solution

The fourth proportional to 608,645.73, 839,780.19 and 393,526.94 is: 542,969.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,645.73 : 839,780.19 = 393,526.94 : x
  2. Step 2: Convert to fraction form
    608,645.73/839,780.19 = 393,526.94/x
  3. Step 3: Cross multiply
    608,645.73x = 839,780.19 × 393,526.94
  4. Step 4: Simplify right side
    608,645.73x = 330,476,128,443.32
  5. Step 5: Solve for x
    x = 330,476,128,443.32/608,645.73
  6. Step 6: Final answer
    x = 542,969.60

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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.