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Finding the Fourth Proportional to 439,563.09, 606,715.34 and 258,396.42

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Solution

The fourth proportional to 439,563.09, 606,715.34 and 258,396.42 is: 356,656.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,563.09 : 606,715.34 = 258,396.42 : x
  2. Step 2: Convert to fraction form
    439,563.09/606,715.34 = 258,396.42/x
  3. Step 3: Cross multiply
    439,563.09x = 606,715.34 × 258,396.42
  4. Step 4: Simplify right side
    439,563.09x = 156,773,070,523.10
  5. Step 5: Solve for x
    x = 156,773,070,523.10/439,563.09
  6. Step 6: Final answer
    x = 356,656.58

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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.