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Finding the Fourth Proportional to 115,492.80, 173,239.20 and 108,494.40

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Solution

The fourth proportional to 115,492.80, 173,239.20 and 108,494.40 is: 162,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,492.80 : 173,239.20 = 108,494.40 : x
  2. Step 2: Convert to fraction form
    115,492.80/173,239.20 = 108,494.40/x
  3. Step 3: Cross multiply
    115,492.80x = 173,239.20 × 108,494.40
  4. Step 4: Simplify right side
    115,492.80x = 18,795,483,060.48
  5. Step 5: Solve for x
    x = 18,795,483,060.48/115,492.80
  6. Step 6: Final answer
    x = 162,741.60

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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.