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Finding the Fourth Proportional to 556,620.26, 768,136.23 and 301,971.38

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Solution

The fourth proportional to 556,620.26, 768,136.23 and 301,971.38 is: 416,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,620.26 : 768,136.23 = 301,971.38 : x
  2. Step 2: Convert to fraction form
    556,620.26/768,136.23 = 301,971.38/x
  3. Step 3: Cross multiply
    556,620.26x = 768,136.23 × 301,971.38
  4. Step 4: Simplify right side
    556,620.26x = 231,955,153,560.42
  5. Step 5: Solve for x
    x = 231,955,153,560.42/556,620.26
  6. Step 6: Final answer
    x = 416,720.65

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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.