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Finding the Fourth Proportional to 186,085.50, 256,790.17 and 105,518.45

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Solution

The fourth proportional to 186,085.50, 256,790.17 and 105,518.45 is: 145,611.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,085.50 : 256,790.17 = 105,518.45 : x
  2. Step 2: Convert to fraction form
    186,085.50/256,790.17 = 105,518.45/x
  3. Step 3: Cross multiply
    186,085.50x = 256,790.17 × 105,518.45
  4. Step 4: Simplify right side
    186,085.50x = 27,096,100,713.64
  5. Step 5: Solve for x
    x = 27,096,100,713.64/186,085.50
  6. Step 6: Final answer
    x = 145,611.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.