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Finding the Fourth Proportional to 6,867.64, 9,478.74 and 4,074.76

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Solution

The fourth proportional to 6,867.64, 9,478.74 and 4,074.76 is: 5,624.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,867.64 : 9,478.74 = 4,074.76 : x
  2. Step 2: Convert to fraction form
    6,867.64/9,478.74 = 4,074.76/x
  3. Step 3: Cross multiply
    6,867.64x = 9,478.74 × 4,074.76
  4. Step 4: Simplify right side
    6,867.64x = 38,623,590.60
  5. Step 5: Solve for x
    x = 38,623,590.60/6,867.64
  6. Step 6: Final answer
    x = 5,624.00

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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.