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Finding the Fourth Proportional to 171,903.60, 257,855.40 and 115,916.40

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Solution

The fourth proportional to 171,903.60, 257,855.40 and 115,916.40 is: 173,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,903.60 : 257,855.40 = 115,916.40 : x
  2. Step 2: Convert to fraction form
    171,903.60/257,855.40 = 115,916.40/x
  3. Step 3: Cross multiply
    171,903.60x = 257,855.40 × 115,916.40
  4. Step 4: Simplify right side
    171,903.60x = 29,889,669,688.56
  5. Step 5: Solve for x
    x = 29,889,669,688.56/171,903.60
  6. Step 6: Final answer
    x = 173,874.60

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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.