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Finding the Fourth Proportional to 8,613.64, 11,885.80 and 4,835.98

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Solution

The fourth proportional to 8,613.64, 11,885.80 and 4,835.98 is: 6,673.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.64 : 11,885.80 = 4,835.98 : x
  2. Step 2: Convert to fraction form
    8,613.64/11,885.80 = 4,835.98/x
  3. Step 3: Cross multiply
    8,613.64x = 11,885.80 × 4,835.98
  4. Step 4: Simplify right side
    8,613.64x = 57,479,491.08
  5. Step 5: Solve for x
    x = 57,479,491.08/8,613.64
  6. Step 6: Final answer
    x = 6,673.08

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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.