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Finding the Fourth Proportional to 68,259.19, 102,388.78 and 19,011.19

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Solution

The fourth proportional to 68,259.19, 102,388.78 and 19,011.19 is: 28,516.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,259.19 : 102,388.78 = 19,011.19 : x
  2. Step 2: Convert to fraction form
    68,259.19/102,388.78 = 19,011.19/x
  3. Step 3: Cross multiply
    68,259.19x = 102,388.78 × 19,011.19
  4. Step 4: Simplify right side
    68,259.19x = 1,946,532,550.45
  5. Step 5: Solve for x
    x = 1,946,532,550.45/68,259.19
  6. Step 6: Final answer
    x = 28,516.78

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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.