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Finding the Fourth Proportional to 190,434.60, 285,724.80 and 187,445.70

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Solution

The fourth proportional to 190,434.60, 285,724.80 and 187,445.70 is: 281,240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,434.60 : 285,724.80 = 187,445.70 : x
  2. Step 2: Convert to fraction form
    190,434.60/285,724.80 = 187,445.70/x
  3. Step 3: Cross multiply
    190,434.60x = 285,724.80 × 187,445.70
  4. Step 4: Simplify right side
    190,434.60x = 53,557,885,143.36
  5. Step 5: Solve for x
    x = 53,557,885,143.36/190,434.60
  6. Step 6: Final answer
    x = 281,240.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.