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Finding the Fourth Proportional to 14,868.55, 20,518.54 and 8,154.01

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Solution

The fourth proportional to 14,868.55, 20,518.54 and 8,154.01 is: 11,252.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,868.55 : 20,518.54 = 8,154.01 : x
  2. Step 2: Convert to fraction form
    14,868.55/20,518.54 = 8,154.01/x
  3. Step 3: Cross multiply
    14,868.55x = 20,518.54 × 8,154.01
  4. Step 4: Simplify right side
    14,868.55x = 167,308,380.35
  5. Step 5: Solve for x
    x = 167,308,380.35/14,868.55
  6. Step 6: Final answer
    x = 11,252.50

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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.