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Finding the Fourth Proportional to 117,817.50, 162,586.89 and 70,069.80

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Solution

The fourth proportional to 117,817.50, 162,586.89 and 70,069.80 is: 96,695.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,817.50 : 162,586.89 = 70,069.80 : x
  2. Step 2: Convert to fraction form
    117,817.50/162,586.89 = 70,069.80/x
  3. Step 3: Cross multiply
    117,817.50x = 162,586.89 × 70,069.80
  4. Step 4: Simplify right side
    117,817.50x = 11,392,430,864.92
  5. Step 5: Solve for x
    x = 11,392,430,864.92/117,817.50
  6. Step 6: Final answer
    x = 96,695.57

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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.