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Finding the Fourth Proportional to 446,318.22, 669,482.91 and 130,781.58

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Solution

The fourth proportional to 446,318.22, 669,482.91 and 130,781.58 is: 196,174.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,318.22 : 669,482.91 = 130,781.58 : x
  2. Step 2: Convert to fraction form
    446,318.22/669,482.91 = 130,781.58/x
  3. Step 3: Cross multiply
    446,318.22x = 669,482.91 × 130,781.58
  4. Step 4: Simplify right side
    446,318.22x = 87,556,032,752.80
  5. Step 5: Solve for x
    x = 87,556,032,752.80/446,318.22
  6. Step 6: Final answer
    x = 196,174.01

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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.