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Finding the Fourth Proportional to 16,879.40, 25,319.10 and 4,567.40

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Solution

The fourth proportional to 16,879.40, 25,319.10 and 4,567.40 is: 6,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.40 : 25,319.10 = 4,567.40 : x
  2. Step 2: Convert to fraction form
    16,879.40/25,319.10 = 4,567.40/x
  3. Step 3: Cross multiply
    16,879.40x = 25,319.10 × 4,567.40
  4. Step 4: Simplify right side
    16,879.40x = 115,642,457.34
  5. Step 5: Solve for x
    x = 115,642,457.34/16,879.40
  6. Step 6: Final answer
    x = 6,851.10

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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.