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Finding the Fourth Proportional to 556,613.75, 768,119.69 and 301,974.05

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Solution

The fourth proportional to 556,613.75, 768,119.69 and 301,974.05 is: 416,720.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,613.75 : 768,119.69 = 301,974.05 : x
  2. Step 2: Convert to fraction form
    556,613.75/768,119.69 = 301,974.05/x
  3. Step 3: Cross multiply
    556,613.75x = 768,119.69 × 301,974.05
  4. Step 4: Simplify right side
    556,613.75x = 231,952,212,164.17
  5. Step 5: Solve for x
    x = 231,952,212,164.17/556,613.75
  6. Step 6: Final answer
    x = 416,720.23

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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.