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Finding the Fourth Proportional to 107,603.60, 161,356.80 and 48,408.80

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Solution

The fourth proportional to 107,603.60, 161,356.80 and 48,408.80 is: 72,591.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,603.60 : 161,356.80 = 48,408.80 : x
  2. Step 2: Convert to fraction form
    107,603.60/161,356.80 = 48,408.80/x
  3. Step 3: Cross multiply
    107,603.60x = 161,356.80 × 48,408.80
  4. Step 4: Simplify right side
    107,603.60x = 7,811,089,059.84
  5. Step 5: Solve for x
    x = 7,811,089,059.84/107,603.60
  6. Step 6: Final answer
    x = 72,591.34

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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.