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Finding the Fourth Proportional to 655,364.36, 983,428.65 and 276,261.90

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Solution

The fourth proportional to 655,364.36, 983,428.65 and 276,261.90 is: 414,553.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,364.36 : 983,428.65 = 276,261.90 : x
  2. Step 2: Convert to fraction form
    655,364.36/983,428.65 = 276,261.90/x
  3. Step 3: Cross multiply
    655,364.36x = 983,428.65 × 276,261.90
  4. Step 4: Simplify right side
    655,364.36x = 271,683,867,363.44
  5. Step 5: Solve for x
    x = 271,683,867,363.44/655,364.36
  6. Step 6: Final answer
    x = 414,553.93

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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.