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Finding the Fourth Proportional to 186,087.52, 256,806.52 and 105,518.40

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Solution

The fourth proportional to 186,087.52, 256,806.52 and 105,518.40 is: 145,618.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,087.52 : 256,806.52 = 105,518.40 : x
  2. Step 2: Convert to fraction form
    186,087.52/256,806.52 = 105,518.40/x
  3. Step 3: Cross multiply
    186,087.52x = 256,806.52 × 105,518.40
  4. Step 4: Simplify right side
    186,087.52x = 27,097,813,099.97
  5. Step 5: Solve for x
    x = 27,097,813,099.97/186,087.52
  6. Step 6: Final answer
    x = 145,618.65

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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.