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Finding the Fourth Proportional to 174,811.70, 262,217.55 and 155,128.70

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Solution

The fourth proportional to 174,811.70, 262,217.55 and 155,128.70 is: 232,693.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,811.70 : 262,217.55 = 155,128.70 : x
  2. Step 2: Convert to fraction form
    174,811.70/262,217.55 = 155,128.70/x
  3. Step 3: Cross multiply
    174,811.70x = 262,217.55 × 155,128.70
  4. Step 4: Simplify right side
    174,811.70x = 40,677,467,648.69
  5. Step 5: Solve for x
    x = 40,677,467,648.69/174,811.70
  6. Step 6: Final answer
    x = 232,693.05

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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.