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Finding the Fourth Proportional to 6,225.30, 8,590.58 and 3,867.40

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Solution

The fourth proportional to 6,225.30, 8,590.58 and 3,867.40 is: 5,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,225.30 : 8,590.58 = 3,867.40 : x
  2. Step 2: Convert to fraction form
    6,225.30/8,590.58 = 3,867.40/x
  3. Step 3: Cross multiply
    6,225.30x = 8,590.58 × 3,867.40
  4. Step 4: Simplify right side
    6,225.30x = 33,223,209.09
  5. Step 5: Solve for x
    x = 33,223,209.09/6,225.30
  6. Step 6: Final answer
    x = 5,336.80

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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.