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Finding the Fourth Proportional to 383,622.40, 575,433.60 and 346,297.60

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Solution

The fourth proportional to 383,622.40, 575,433.60 and 346,297.60 is: 519,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,622.40 : 575,433.60 = 346,297.60 : x
  2. Step 2: Convert to fraction form
    383,622.40/575,433.60 = 346,297.60/x
  3. Step 3: Cross multiply
    383,622.40x = 575,433.60 × 346,297.60
  4. Step 4: Simplify right side
    383,622.40x = 199,271,274,639.36
  5. Step 5: Solve for x
    x = 199,271,274,639.36/383,622.40
  6. Step 6: Final answer
    x = 519,446.40

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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.