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Finding the Fourth Proportional to 124,530.45, 186,850.55 and 65,351.85

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Solution

The fourth proportional to 124,530.45, 186,850.55 and 65,351.85 is: 98,056.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,530.45 : 186,850.55 = 65,351.85 : x
  2. Step 2: Convert to fraction form
    124,530.45/186,850.55 = 65,351.85/x
  3. Step 3: Cross multiply
    124,530.45x = 186,850.55 × 65,351.85
  4. Step 4: Simplify right side
    124,530.45x = 12,211,029,116.02
  5. Step 5: Solve for x
    x = 12,211,029,116.02/124,530.45
  6. Step 6: Final answer
    x = 98,056.57

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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.