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Finding the Fourth Proportional to 66,404.40, 91,637.10 and 36,190.40

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Solution

The fourth proportional to 66,404.40, 91,637.10 and 36,190.40 is: 49,942.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,404.40 : 91,637.10 = 36,190.40 : x
  2. Step 2: Convert to fraction form
    66,404.40/91,637.10 = 36,190.40/x
  3. Step 3: Cross multiply
    66,404.40x = 91,637.10 × 36,190.40
  4. Step 4: Simplify right side
    66,404.40x = 3,316,383,303.84
  5. Step 5: Solve for x
    x = 3,316,383,303.84/66,404.40
  6. Step 6: Final answer
    x = 49,942.22

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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.