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Finding the Fourth Proportional to 445,834.60, 668,751.90 and 293,619.40

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Solution

The fourth proportional to 445,834.60, 668,751.90 and 293,619.40 is: 440,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,834.60 : 668,751.90 = 293,619.40 : x
  2. Step 2: Convert to fraction form
    445,834.60/668,751.90 = 293,619.40/x
  3. Step 3: Cross multiply
    445,834.60x = 668,751.90 × 293,619.40
  4. Step 4: Simplify right side
    445,834.60x = 196,358,531,626.86
  5. Step 5: Solve for x
    x = 196,358,531,626.86/445,834.60
  6. Step 6: Final answer
    x = 440,429.10

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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.