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Finding the Fourth Proportional to 114,738.80, 172,108.20 and 103,074.80

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Solution

The fourth proportional to 114,738.80, 172,108.20 and 103,074.80 is: 154,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,738.80 : 172,108.20 = 103,074.80 : x
  2. Step 2: Convert to fraction form
    114,738.80/172,108.20 = 103,074.80/x
  3. Step 3: Cross multiply
    114,738.80x = 172,108.20 × 103,074.80
  4. Step 4: Simplify right side
    114,738.80x = 17,740,018,293.36
  5. Step 5: Solve for x
    x = 17,740,018,293.36/114,738.80
  6. Step 6: Final answer
    x = 154,612.20

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1.5x scale

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.