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Finding the Fourth Proportional to 14,903.76, 20,566.28 and 8,188.08

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Solution

The fourth proportional to 14,903.76, 20,566.28 and 8,188.08 is: 11,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,903.76 : 20,566.28 = 8,188.08 : x
  2. Step 2: Convert to fraction form
    14,903.76/20,566.28 = 8,188.08/x
  3. Step 3: Cross multiply
    14,903.76x = 20,566.28 × 8,188.08
  4. Step 4: Simplify right side
    14,903.76x = 168,398,345.94
  5. Step 5: Solve for x
    x = 168,398,345.94/14,903.76
  6. Step 6: Final answer
    x = 11,299.05

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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.