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Finding the Fourth Proportional to 14,658.60, 20,228.88 and 8,607.66

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Solution

The fourth proportional to 14,658.60, 20,228.88 and 8,607.66 is: 11,878.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,658.60 : 20,228.88 = 8,607.66 : x
  2. Step 2: Convert to fraction form
    14,658.60/20,228.88 = 8,607.66/x
  3. Step 3: Cross multiply
    14,658.60x = 20,228.88 × 8,607.66
  4. Step 4: Simplify right side
    14,658.60x = 174,123,321.22
  5. Step 5: Solve for x
    x = 174,123,321.22/14,658.60
  6. Step 6: Final answer
    x = 11,878.58

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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.