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Finding the Fourth Proportional to 19,207.80, 28,814.40 and 6,058.80

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Solution

The fourth proportional to 19,207.80, 28,814.40 and 6,058.80 is: 9,089.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.80 : 28,814.40 = 6,058.80 : x
  2. Step 2: Convert to fraction form
    19,207.80/28,814.40 = 6,058.80/x
  3. Step 3: Cross multiply
    19,207.80x = 28,814.40 × 6,058.80
  4. Step 4: Simplify right side
    19,207.80x = 174,580,686.72
  5. Step 5: Solve for x
    x = 174,580,686.72/19,207.80
  6. Step 6: Final answer
    x = 9,089.05

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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.