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Finding the Fourth Proportional to 114,920.70, 172,061.10 and 58,639.20

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Solution

The fourth proportional to 114,920.70, 172,061.10 and 58,639.20 is: 87,795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,920.70 : 172,061.10 = 58,639.20 : x
  2. Step 2: Convert to fraction form
    114,920.70/172,061.10 = 58,639.20/x
  3. Step 3: Cross multiply
    114,920.70x = 172,061.10 × 58,639.20
  4. Step 4: Simplify right side
    114,920.70x = 10,089,525,255.12
  5. Step 5: Solve for x
    x = 10,089,525,255.12/114,920.70
  6. Step 6: Final answer
    x = 87,795.54

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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.