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Finding the Fourth Proportional to 115,647.60, 173,487.60 and 49,087.20

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Solution

The fourth proportional to 115,647.60, 173,487.60 and 49,087.20 is: 73,637.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,647.60 : 173,487.60 = 49,087.20 : x
  2. Step 2: Convert to fraction form
    115,647.60/173,487.60 = 49,087.20/x
  3. Step 3: Cross multiply
    115,647.60x = 173,487.60 × 49,087.20
  4. Step 4: Simplify right side
    115,647.60x = 8,516,020,518.72
  5. Step 5: Solve for x
    x = 8,516,020,518.72/115,647.60
  6. Step 6: Final answer
    x = 73,637.68

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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.