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Finding the Fourth Proportional to 9,762.80, 13,467.16 and 6,176.64

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Solution

The fourth proportional to 9,762.80, 13,467.16 and 6,176.64 is: 8,520.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,762.80 : 13,467.16 = 6,176.64 : x
  2. Step 2: Convert to fraction form
    9,762.80/13,467.16 = 6,176.64/x
  3. Step 3: Cross multiply
    9,762.80x = 13,467.16 × 6,176.64
  4. Step 4: Simplify right side
    9,762.80x = 83,181,799.14
  5. Step 5: Solve for x
    x = 83,181,799.14/9,762.80
  6. Step 6: Final answer
    x = 8,520.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.