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Finding the Fourth Proportional to 186,087.53, 256,792.92 and 105,520.47

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Solution

The fourth proportional to 186,087.53, 256,792.92 and 105,520.47 is: 145,613.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,087.53 : 256,792.92 = 105,520.47 : x
  2. Step 2: Convert to fraction form
    186,087.53/256,792.92 = 105,520.47/x
  3. Step 3: Cross multiply
    186,087.53x = 256,792.92 × 105,520.47
  4. Step 4: Simplify right side
    186,087.53x = 27,096,909,611.07
  5. Step 5: Solve for x
    x = 27,096,909,611.07/186,087.53
  6. Step 6: Final answer
    x = 145,613.79

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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.