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Finding the Fourth Proportional to 14,712.60, 20,313.15 and 11,303.53

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Solution

The fourth proportional to 14,712.60, 20,313.15 and 11,303.53 is: 15,606.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,712.60 : 20,313.15 = 11,303.53 : x
  2. Step 2: Convert to fraction form
    14,712.60/20,313.15 = 11,303.53/x
  3. Step 3: Cross multiply
    14,712.60x = 20,313.15 × 11,303.53
  4. Step 4: Simplify right side
    14,712.60x = 229,610,416.88
  5. Step 5: Solve for x
    x = 229,610,416.88/14,712.60
  6. Step 6: Final answer
    x = 15,606.38

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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.