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Finding the Fourth Proportional to 7,859.21, 10,779.26 and 6,973.48

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Solution

The fourth proportional to 7,859.21, 10,779.26 and 6,973.48 is: 9,564.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859.21 : 10,779.26 = 6,973.48 : x
  2. Step 2: Convert to fraction form
    7,859.21/10,779.26 = 6,973.48/x
  3. Step 3: Cross multiply
    7,859.21x = 10,779.26 × 6,973.48
  4. Step 4: Simplify right side
    7,859.21x = 75,168,954.02
  5. Step 5: Solve for x
    x = 75,168,954.02/7,859.21
  6. Step 6: Final answer
    x = 9,564.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.