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Finding the Fourth Proportional to 186,838.74, 280,374.75 and 136,143.54

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Solution

The fourth proportional to 186,838.74, 280,374.75 and 136,143.54 is: 204,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,838.74 : 280,374.75 = 136,143.54 : x
  2. Step 2: Convert to fraction form
    186,838.74/280,374.75 = 136,143.54/x
  3. Step 3: Cross multiply
    186,838.74x = 280,374.75 × 136,143.54
  4. Step 4: Simplify right side
    186,838.74x = 38,171,210,991.62
  5. Step 5: Solve for x
    x = 38,171,210,991.62/186,838.74
  6. Step 6: Final answer
    x = 204,300.30

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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.