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Finding the Fourth Proportional to 66,995.40, 100,423.16 and 22,606.86

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Solution

The fourth proportional to 66,995.40, 100,423.16 and 22,606.86 is: 33,886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,995.40 : 100,423.16 = 22,606.86 : x
  2. Step 2: Convert to fraction form
    66,995.40/100,423.16 = 22,606.86/x
  3. Step 3: Cross multiply
    66,995.40x = 100,423.16 × 22,606.86
  4. Step 4: Simplify right side
    66,995.40x = 2,270,252,318.88
  5. Step 5: Solve for x
    x = 2,270,252,318.88/66,995.40
  6. Step 6: Final answer
    x = 33,886.69

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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.