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Finding the Fourth Proportional to 655,409.39, 983,219.78 and 193,834.13

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Solution

The fourth proportional to 655,409.39, 983,219.78 and 193,834.13 is: 290,782.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,409.39 : 983,219.78 = 193,834.13 : x
  2. Step 2: Convert to fraction form
    655,409.39/983,219.78 = 193,834.13/x
  3. Step 3: Cross multiply
    655,409.39x = 983,219.78 × 193,834.13
  4. Step 4: Simplify right side
    655,409.39x = 190,581,546,223.58
  5. Step 5: Solve for x
    x = 190,581,546,223.58/655,409.39
  6. Step 6: Final answer
    x = 290,782.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.