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Finding the Fourth Proportional to 66,397.62, 91,628.72 and 36,182.93

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Solution

The fourth proportional to 66,397.62, 91,628.72 and 36,182.93 is: 49,932.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,397.62 : 91,628.72 = 36,182.93 : x
  2. Step 2: Convert to fraction form
    66,397.62/91,628.72 = 36,182.93/x
  3. Step 3: Cross multiply
    66,397.62x = 91,628.72 × 36,182.93
  4. Step 4: Simplify right side
    66,397.62x = 3,315,395,561.75
  5. Step 5: Solve for x
    x = 3,315,395,561.75/66,397.62
  6. Step 6: Final answer
    x = 49,932.45

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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.