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Finding the Fourth Proportional to 100,795.79, 139,098.16 and 58,353.41

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Solution

The fourth proportional to 100,795.79, 139,098.16 and 58,353.41 is: 80,527.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,795.79 : 139,098.16 = 58,353.41 : x
  2. Step 2: Convert to fraction form
    100,795.79/139,098.16 = 58,353.41/x
  3. Step 3: Cross multiply
    100,795.79x = 139,098.16 × 58,353.41
  4. Step 4: Simplify right side
    100,795.79x = 8,116,852,381.41
  5. Step 5: Solve for x
    x = 8,116,852,381.41/100,795.79
  6. Step 6: Final answer
    x = 80,527.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.