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Finding the Fourth Proportional to 186,216.62, 256,959.39 and 105,618.38

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Solution

The fourth proportional to 186,216.62, 256,959.39 and 105,618.38 is: 145,742.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,216.62 : 256,959.39 = 105,618.38 : x
  2. Step 2: Convert to fraction form
    186,216.62/256,959.39 = 105,618.38/x
  3. Step 3: Cross multiply
    186,216.62x = 256,959.39 × 105,618.38
  4. Step 4: Simplify right side
    186,216.62x = 27,139,634,497.59
  5. Step 5: Solve for x
    x = 27,139,634,497.59/186,216.62
  6. Step 6: Final answer
    x = 145,742.28

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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.