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Finding the Fourth Proportional to 114,704.80, 172,057.20 and 103,040.80

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Solution

The fourth proportional to 114,704.80, 172,057.20 and 103,040.80 is: 154,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,704.80 : 172,057.20 = 103,040.80 : x
  2. Step 2: Convert to fraction form
    114,704.80/172,057.20 = 103,040.80/x
  3. Step 3: Cross multiply
    114,704.80x = 172,057.20 × 103,040.80
  4. Step 4: Simplify right side
    114,704.80x = 17,728,911,533.76
  5. Step 5: Solve for x
    x = 17,728,911,533.76/114,704.80
  6. Step 6: Final answer
    x = 154,561.20

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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.