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Finding the Fourth Proportional to 186,993.15, 258,069.20 and 111,541.65

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Solution

The fourth proportional to 186,993.15, 258,069.20 and 111,541.65 is: 153,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,993.15 : 258,069.20 = 111,541.65 : x
  2. Step 2: Convert to fraction form
    186,993.15/258,069.20 = 111,541.65/x
  3. Step 3: Cross multiply
    186,993.15x = 258,069.20 × 111,541.65
  4. Step 4: Simplify right side
    186,993.15x = 28,785,464,382.18
  5. Step 5: Solve for x
    x = 28,785,464,382.18/186,993.15
  6. Step 6: Final answer
    x = 153,938.60

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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.