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Finding the Fourth Proportional to 186,135.88, 256,884.60 and 105,589.48

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Solution

The fourth proportional to 186,135.88, 256,884.60 and 105,589.48 is: 145,723.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,135.88 : 256,884.60 = 105,589.48 : x
  2. Step 2: Convert to fraction form
    186,135.88/256,884.60 = 105,589.48/x
  3. Step 3: Cross multiply
    186,135.88x = 256,884.60 × 105,589.48
  4. Step 4: Simplify right side
    186,135.88x = 27,124,311,334.01
  5. Step 5: Solve for x
    x = 27,124,311,334.01/186,135.88
  6. Step 6: Final answer
    x = 145,723.17

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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.