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Finding the Fourth Proportional to 66,686.78, 100,035.41 and 22,313.69

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Solution

The fourth proportional to 66,686.78, 100,035.41 and 22,313.69 is: 33,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,686.78 : 100,035.41 = 22,313.69 : x
  2. Step 2: Convert to fraction form
    66,686.78/100,035.41 = 22,313.69/x
  3. Step 3: Cross multiply
    66,686.78x = 100,035.41 × 22,313.69
  4. Step 4: Simplify right side
    66,686.78x = 2,232,158,516.02
  5. Step 5: Solve for x
    x = 2,232,158,516.02/66,686.78
  6. Step 6: Final answer
    x = 33,472.28

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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.