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Finding the Fourth Proportional to 13,564.53, 20,359.95 and 6,549.50

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Solution

The fourth proportional to 13,564.53, 20,359.95 and 6,549.50 is: 9,830.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,564.53 : 20,359.95 = 6,549.50 : x
  2. Step 2: Convert to fraction form
    13,564.53/20,359.95 = 6,549.50/x
  3. Step 3: Cross multiply
    13,564.53x = 20,359.95 × 6,549.50
  4. Step 4: Simplify right side
    13,564.53x = 133,347,390.73
  5. Step 5: Solve for x
    x = 133,347,390.73/13,564.53
  6. Step 6: Final answer
    x = 9,830.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.