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Finding the Fourth Proportional to 280,820.44, 387,674.94 and 190,653.40

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Solution

The fourth proportional to 280,820.44, 387,674.94 and 190,653.40 is: 263,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,820.44 : 387,674.94 = 190,653.40 : x
  2. Step 2: Convert to fraction form
    280,820.44/387,674.94 = 190,653.40/x
  3. Step 3: Cross multiply
    280,820.44x = 387,674.94 × 190,653.40
  4. Step 4: Simplify right side
    280,820.44x = 73,911,545,405.80
  5. Step 5: Solve for x
    x = 73,911,545,405.80/280,820.44
  6. Step 6: Final answer
    x = 263,198.60

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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.