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Finding the Fourth Proportional to 357,885.31, 536,787.39 and 91,647.76

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Solution

The fourth proportional to 357,885.31, 536,787.39 and 91,647.76 is: 137,461.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,885.31 : 536,787.39 = 91,647.76 : x
  2. Step 2: Convert to fraction form
    357,885.31/536,787.39 = 91,647.76/x
  3. Step 3: Cross multiply
    357,885.31x = 536,787.39 × 91,647.76
  4. Step 4: Simplify right side
    357,885.31x = 49,195,359,205.81
  5. Step 5: Solve for x
    x = 49,195,359,205.81/357,885.31
  6. Step 6: Final answer
    x = 137,461.24

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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.