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Finding the Fourth Proportional to 66,782.61, 100,177.02 and 37,178.12

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Solution

The fourth proportional to 66,782.61, 100,177.02 and 37,178.12 is: 55,768.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,782.61 : 100,177.02 = 37,178.12 : x
  2. Step 2: Convert to fraction form
    66,782.61/100,177.02 = 37,178.12/x
  3. Step 3: Cross multiply
    66,782.61x = 100,177.02 × 37,178.12
  4. Step 4: Simplify right side
    66,782.61x = 3,724,393,521.24
  5. Step 5: Solve for x
    x = 3,724,393,521.24/66,782.61
  6. Step 6: Final answer
    x = 55,768.91

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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.