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Finding the Fourth Proportional to 262,453.66, 393,088.61 and 121,916.54

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Solution

The fourth proportional to 262,453.66, 393,088.61 and 121,916.54 is: 182,599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,453.66 : 393,088.61 = 121,916.54 : x
  2. Step 2: Convert to fraction form
    262,453.66/393,088.61 = 121,916.54/x
  3. Step 3: Cross multiply
    262,453.66x = 393,088.61 × 121,916.54
  4. Step 4: Simplify right side
    262,453.66x = 47,924,003,244.61
  5. Step 5: Solve for x
    x = 47,924,003,244.61/262,453.66
  6. Step 6: Final answer
    x = 182,599.87

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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.