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Finding the Fourth Proportional to 173,621.70, 239,596.65 and 98,172.90

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Solution

The fourth proportional to 173,621.70, 239,596.65 and 98,172.90 is: 135,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,621.70 : 239,596.65 = 98,172.90 : x
  2. Step 2: Convert to fraction form
    173,621.70/239,596.65 = 98,172.90/x
  3. Step 3: Cross multiply
    173,621.70x = 239,596.65 × 98,172.90
  4. Step 4: Simplify right side
    173,621.70x = 23,521,897,960.79
  5. Step 5: Solve for x
    x = 23,521,897,960.79/173,621.70
  6. Step 6: Final answer
    x = 135,477.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.