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Finding the Fourth Proportional to 119,611.50, 165,071.43 and 65,896.62

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Solution

The fourth proportional to 119,611.50, 165,071.43 and 65,896.62 is: 90,941.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,611.50 : 165,071.43 = 65,896.62 : x
  2. Step 2: Convert to fraction form
    119,611.50/165,071.43 = 65,896.62/x
  3. Step 3: Cross multiply
    119,611.50x = 165,071.43 × 65,896.62
  4. Step 4: Simplify right side
    119,611.50x = 10,877,649,295.57
  5. Step 5: Solve for x
    x = 10,877,649,295.57/119,611.50
  6. Step 6: Final answer
    x = 90,941.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.