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Finding the Fourth Proportional to 383,516.09, 575,148.93 and 127,279.83

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Solution

The fourth proportional to 383,516.09, 575,148.93 and 127,279.83 is: 190,878.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,516.09 : 575,148.93 = 127,279.83 : x
  2. Step 2: Convert to fraction form
    383,516.09/575,148.93 = 127,279.83/x
  3. Step 3: Cross multiply
    383,516.09x = 575,148.93 × 127,279.83
  4. Step 4: Simplify right side
    383,516.09x = 73,204,858,035.08
  5. Step 5: Solve for x
    x = 73,204,858,035.08/383,516.09
  6. Step 6: Final answer
    x = 190,878.19

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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.