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Finding the Fourth Proportional to 19,057.56, 28,587.06 and 5,206.56

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Solution

The fourth proportional to 19,057.56, 28,587.06 and 5,206.56 is: 7,810.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,057.56 : 28,587.06 = 5,206.56 : x
  2. Step 2: Convert to fraction form
    19,057.56/28,587.06 = 5,206.56/x
  3. Step 3: Cross multiply
    19,057.56x = 28,587.06 × 5,206.56
  4. Step 4: Simplify right side
    19,057.56x = 148,840,243.11
  5. Step 5: Solve for x
    x = 148,840,243.11/19,057.56
  6. Step 6: Final answer
    x = 7,810.04

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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.