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Finding the Fourth Proportional to 115,474.60, 173,211.90 and 65,535.40

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Solution

The fourth proportional to 115,474.60, 173,211.90 and 65,535.40 is: 98,303.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,474.60 : 173,211.90 = 65,535.40 : x
  2. Step 2: Convert to fraction form
    115,474.60/173,211.90 = 65,535.40/x
  3. Step 3: Cross multiply
    115,474.60x = 173,211.90 × 65,535.40
  4. Step 4: Simplify right side
    115,474.60x = 11,351,511,151.26
  5. Step 5: Solve for x
    x = 11,351,511,151.26/115,474.60
  6. Step 6: Final answer
    x = 98,303.10

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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.