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Finding the Fourth Proportional to 218,576.04, 301,640.05 and 121,786.41

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Solution

The fourth proportional to 218,576.04, 301,640.05 and 121,786.41 is: 168,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,576.04 : 301,640.05 = 121,786.41 : x
  2. Step 2: Convert to fraction form
    218,576.04/301,640.05 = 121,786.41/x
  3. Step 3: Cross multiply
    218,576.04x = 301,640.05 × 121,786.41
  4. Step 4: Simplify right side
    218,576.04x = 36,735,658,801.72
  5. Step 5: Solve for x
    x = 36,735,658,801.72/218,576.04
  6. Step 6: Final answer
    x = 168,068.10

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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.