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Finding the Fourth Proportional to 18,693.96, 28,030.43 and 6,207.30

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Solution

The fourth proportional to 18,693.96, 28,030.43 and 6,207.30 is: 9,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693.96 : 28,030.43 = 6,207.30 : x
  2. Step 2: Convert to fraction form
    18,693.96/28,030.43 = 6,207.30/x
  3. Step 3: Cross multiply
    18,693.96x = 28,030.43 × 6,207.30
  4. Step 4: Simplify right side
    18,693.96x = 173,993,303.66
  5. Step 5: Solve for x
    x = 173,993,303.66/18,693.96
  6. Step 6: Final answer
    x = 9,307.46

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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.