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Finding the Fourth Proportional to 66,831.80, 100,247.70 and 41,948.60

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Solution

The fourth proportional to 66,831.80, 100,247.70 and 41,948.60 is: 62,922.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,831.80 : 100,247.70 = 41,948.60 : x
  2. Step 2: Convert to fraction form
    66,831.80/100,247.70 = 41,948.60/x
  3. Step 3: Cross multiply
    66,831.80x = 100,247.70 × 41,948.60
  4. Step 4: Simplify right side
    66,831.80x = 4,205,250,668.22
  5. Step 5: Solve for x
    x = 4,205,250,668.22/66,831.80
  6. Step 6: Final answer
    x = 62,922.90

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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.