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Finding the Fourth Proportional to 285,209.71, 393,589.94 and 183,235.77

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Solution

The fourth proportional to 285,209.71, 393,589.94 and 183,235.77 is: 252,865.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,209.71 : 393,589.94 = 183,235.77 : x
  2. Step 2: Convert to fraction form
    285,209.71/393,589.94 = 183,235.77/x
  3. Step 3: Cross multiply
    285,209.71x = 393,589.94 × 183,235.77
  4. Step 4: Simplify right side
    285,209.71x = 72,119,754,803.98
  5. Step 5: Solve for x
    x = 72,119,754,803.98/285,209.71
  6. Step 6: Final answer
    x = 252,865.71

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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.