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Finding the Fourth Proportional to 572,736.60, 857,355.30 and 446,765.40

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Solution

The fourth proportional to 572,736.60, 857,355.30 and 446,765.40 is: 668,783.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,736.60 : 857,355.30 = 446,765.40 : x
  2. Step 2: Convert to fraction form
    572,736.60/857,355.30 = 446,765.40/x
  3. Step 3: Cross multiply
    572,736.60x = 857,355.30 × 446,765.40
  4. Step 4: Simplify right side
    572,736.60x = 383,036,683,546.62
  5. Step 5: Solve for x
    x = 383,036,683,546.62/572,736.60
  6. Step 6: Final answer
    x = 668,783.32

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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.