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Finding the Fourth Proportional to 424,014.67, 636,018.75 and 108,471.07

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Solution

The fourth proportional to 424,014.67, 636,018.75 and 108,471.07 is: 162,705.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,014.67 : 636,018.75 = 108,471.07 : x
  2. Step 2: Convert to fraction form
    424,014.67/636,018.75 = 108,471.07/x
  3. Step 3: Cross multiply
    424,014.67x = 636,018.75 × 108,471.07
  4. Step 4: Simplify right side
    424,014.67x = 68,989,634,352.56
  5. Step 5: Solve for x
    x = 68,989,634,352.56/424,014.67
  6. Step 6: Final answer
    x = 162,705.77

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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.