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Finding the Fourth Proportional to 439,902.30, 617,522.10 and 439,902.30

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Solution

The fourth proportional to 439,902.30, 617,522.10 and 439,902.30 is: 617,522.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,902.30 : 617,522.10 = 439,902.30 : x
  2. Step 2: Convert to fraction form
    439,902.30/617,522.10 = 439,902.30/x
  3. Step 3: Cross multiply
    439,902.30x = 617,522.10 × 439,902.30
  4. Step 4: Simplify right side
    439,902.30x = 271,649,392,090.83
  5. Step 5: Solve for x
    x = 271,649,392,090.83/439,902.30
  6. Step 6: Final answer
    x = 617,522.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.