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Finding the Fourth Proportional to 448,946.40, 674,197.20 and 238,994.40

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Solution

The fourth proportional to 448,946.40, 674,197.20 and 238,994.40 is: 358,905.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,946.40 : 674,197.20 = 238,994.40 : x
  2. Step 2: Convert to fraction form
    448,946.40/674,197.20 = 238,994.40/x
  3. Step 3: Cross multiply
    448,946.40x = 674,197.20 × 238,994.40
  4. Step 4: Simplify right side
    448,946.40x = 161,129,355,295.68
  5. Step 5: Solve for x
    x = 161,129,355,295.68/448,946.40
  6. Step 6: Final answer
    x = 358,905.55

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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.