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Finding the Fourth Proportional to 14,712.75, 20,303.60 and 8,088.75

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Solution

The fourth proportional to 14,712.75, 20,303.60 and 8,088.75 is: 11,162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,712.75 : 20,303.60 = 8,088.75 : x
  2. Step 2: Convert to fraction form
    14,712.75/20,303.60 = 8,088.75/x
  3. Step 3: Cross multiply
    14,712.75x = 20,303.60 × 8,088.75
  4. Step 4: Simplify right side
    14,712.75x = 164,230,744.50
  5. Step 5: Solve for x
    x = 164,230,744.50/14,712.75
  6. Step 6: Final answer
    x = 11,162.48

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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.