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Finding the Fourth Proportional to 69,486.40, 104,083.80 and 62,099.20

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Solution

The fourth proportional to 69,486.40, 104,083.80 and 62,099.20 is: 93,018.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,486.40 : 104,083.80 = 62,099.20 : x
  2. Step 2: Convert to fraction form
    69,486.40/104,083.80 = 62,099.20/x
  3. Step 3: Cross multiply
    69,486.40x = 104,083.80 × 62,099.20
  4. Step 4: Simplify right side
    69,486.40x = 6,463,520,712.96
  5. Step 5: Solve for x
    x = 6,463,520,712.96/69,486.40
  6. Step 6: Final answer
    x = 93,018.50

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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.