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Finding the Fourth Proportional to 171,936.90, 257,905.35 and 47,277.90

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Solution

The fourth proportional to 171,936.90, 257,905.35 and 47,277.90 is: 70,916.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,936.90 : 257,905.35 = 47,277.90 : x
  2. Step 2: Convert to fraction form
    171,936.90/257,905.35 = 47,277.90/x
  3. Step 3: Cross multiply
    171,936.90x = 257,905.35 × 47,277.90
  4. Step 4: Simplify right side
    171,936.90x = 12,193,223,346.77
  5. Step 5: Solve for x
    x = 12,193,223,346.77/171,936.90
  6. Step 6: Final answer
    x = 70,916.85

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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.