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Finding the Fourth Proportional to 1,923.55, 2,885.63 and 828.23

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Solution

The fourth proportional to 1,923.55, 2,885.63 and 828.23 is: 1,242.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,923.55 : 2,885.63 = 828.23 : x
  2. Step 2: Convert to fraction form
    1,923.55/2,885.63 = 828.23/x
  3. Step 3: Cross multiply
    1,923.55x = 2,885.63 × 828.23
  4. Step 4: Simplify right side
    1,923.55x = 2,389,946.77
  5. Step 5: Solve for x
    x = 2,389,946.77/1,923.55
  6. Step 6: Final answer
    x = 1,242.47

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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.