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Finding the Fourth Proportional to 114,867.20, 172,300.80 and 106,572.80

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Solution

The fourth proportional to 114,867.20, 172,300.80 and 106,572.80 is: 159,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,867.20 : 172,300.80 = 106,572.80 : x
  2. Step 2: Convert to fraction form
    114,867.20/172,300.80 = 106,572.80/x
  3. Step 3: Cross multiply
    114,867.20x = 172,300.80 × 106,572.80
  4. Step 4: Simplify right side
    114,867.20x = 18,362,578,698.24
  5. Step 5: Solve for x
    x = 18,362,578,698.24/114,867.20
  6. Step 6: Final answer
    x = 159,859.20

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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.