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Finding the Fourth Proportional to 263,277.40, 394,916.10 and 156,989.20

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Solution

The fourth proportional to 263,277.40, 394,916.10 and 156,989.20 is: 235,483.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,277.40 : 394,916.10 = 156,989.20 : x
  2. Step 2: Convert to fraction form
    263,277.40/394,916.10 = 156,989.20/x
  3. Step 3: Cross multiply
    263,277.40x = 394,916.10 × 156,989.20
  4. Step 4: Simplify right side
    263,277.40x = 61,997,562,606.12
  5. Step 5: Solve for x
    x = 61,997,562,606.12/263,277.40
  6. Step 6: Final answer
    x = 235,483.80

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1.5x scale

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.