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Finding the Fourth Proportional to 173,731.40, 260,742.90 and 85,060.70

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Solution

The fourth proportional to 173,731.40, 260,742.90 and 85,060.70 is: 127,662.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,731.40 : 260,742.90 = 85,060.70 : x
  2. Step 2: Convert to fraction form
    173,731.40/260,742.90 = 85,060.70/x
  3. Step 3: Cross multiply
    173,731.40x = 260,742.90 × 85,060.70
  4. Step 4: Simplify right side
    173,731.40x = 22,178,973,594.03
  5. Step 5: Solve for x
    x = 22,178,973,594.03/173,731.40
  6. Step 6: Final answer
    x = 127,662.44

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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.