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Finding the Fourth Proportional to 200,862.80, 277,190.60 and 111,438.80

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Solution

The fourth proportional to 200,862.80, 277,190.60 and 111,438.80 is: 153,785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,862.80 : 277,190.60 = 111,438.80 : x
  2. Step 2: Convert to fraction form
    200,862.80/277,190.60 = 111,438.80/x
  3. Step 3: Cross multiply
    200,862.80x = 277,190.60 × 111,438.80
  4. Step 4: Simplify right side
    200,862.80x = 30,889,787,835.28
  5. Step 5: Solve for x
    x = 30,889,787,835.28/200,862.80
  6. Step 6: Final answer
    x = 153,785.51

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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.