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Finding the Fourth Proportional to 285,267.69, 393,580.62 and 189,790.56

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Solution

The fourth proportional to 285,267.69, 393,580.62 and 189,790.56 is: 261,851.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,267.69 : 393,580.62 = 189,790.56 : x
  2. Step 2: Convert to fraction form
    285,267.69/393,580.62 = 189,790.56/x
  3. Step 3: Cross multiply
    285,267.69x = 393,580.62 × 189,790.56
  4. Step 4: Simplify right side
    285,267.69x = 74,697,886,274.95
  5. Step 5: Solve for x
    x = 74,697,886,274.95/285,267.69
  6. Step 6: Final answer
    x = 261,851.90

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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.