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Finding the Fourth Proportional to 374,803.40, 562,205.10 and 217,436.60

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Solution

The fourth proportional to 374,803.40, 562,205.10 and 217,436.60 is: 326,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,803.40 : 562,205.10 = 217,436.60 : x
  2. Step 2: Convert to fraction form
    374,803.40/562,205.10 = 217,436.60/x
  3. Step 3: Cross multiply
    374,803.40x = 562,205.10 × 217,436.60
  4. Step 4: Simplify right side
    374,803.40x = 122,243,965,446.66
  5. Step 5: Solve for x
    x = 122,243,965,446.66/374,803.40
  6. Step 6: Final answer
    x = 326,154.90

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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.