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Finding the Fourth Proportional to 70,501.50, 105,755.14 and 17,912.34

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Solution

The fourth proportional to 70,501.50, 105,755.14 and 17,912.34 is: 26,869.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,501.50 : 105,755.14 = 17,912.34 : x
  2. Step 2: Convert to fraction form
    70,501.50/105,755.14 = 17,912.34/x
  3. Step 3: Cross multiply
    70,501.50x = 105,755.14 × 17,912.34
  4. Step 4: Simplify right side
    70,501.50x = 1,894,322,024.43
  5. Step 5: Solve for x
    x = 1,894,322,024.43/70,501.50
  6. Step 6: Final answer
    x = 26,869.24

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1.5x scale

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.