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Finding the Fourth Proportional to 19,157.05, 28,735.58 and 5,306.05

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Solution

The fourth proportional to 19,157.05, 28,735.58 and 5,306.05 is: 7,959.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.05 : 28,735.58 = 5,306.05 : x
  2. Step 2: Convert to fraction form
    19,157.05/28,735.58 = 5,306.05/x
  3. Step 3: Cross multiply
    19,157.05x = 28,735.58 × 5,306.05
  4. Step 4: Simplify right side
    19,157.05x = 152,472,397.73
  5. Step 5: Solve for x
    x = 152,472,397.73/19,157.05
  6. Step 6: Final answer
    x = 7,959.08

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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.