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Finding the Fourth Proportional to 19,047.44, 28,577.88 and 8,516.48

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Solution

The fourth proportional to 19,047.44, 28,577.88 and 8,516.48 is: 12,777.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,047.44 : 28,577.88 = 8,516.48 : x
  2. Step 2: Convert to fraction form
    19,047.44/28,577.88 = 8,516.48/x
  3. Step 3: Cross multiply
    19,047.44x = 28,577.88 × 8,516.48
  4. Step 4: Simplify right side
    19,047.44x = 243,382,943.46
  5. Step 5: Solve for x
    x = 243,382,943.46/19,047.44
  6. Step 6: Final answer
    x = 12,777.72

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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.