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Finding the Fourth Proportional to 19,059.78, 28,615.85 and 9,706.08

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Solution

The fourth proportional to 19,059.78, 28,615.85 and 9,706.08 is: 14,572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,059.78 : 28,615.85 = 9,706.08 : x
  2. Step 2: Convert to fraction form
    19,059.78/28,615.85 = 9,706.08/x
  3. Step 3: Cross multiply
    19,059.78x = 28,615.85 × 9,706.08
  4. Step 4: Simplify right side
    19,059.78x = 277,747,680.84
  5. Step 5: Solve for x
    x = 277,747,680.84/19,059.78
  6. Step 6: Final answer
    x = 14,572.45

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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.