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Finding the Fourth Proportional to 14,719.12, 20,301.68 and 9,343.16

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Solution

The fourth proportional to 14,719.12, 20,301.68 and 9,343.16 is: 12,886.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,719.12 : 20,301.68 = 9,343.16 : x
  2. Step 2: Convert to fraction form
    14,719.12/20,301.68 = 9,343.16/x
  3. Step 3: Cross multiply
    14,719.12x = 20,301.68 × 9,343.16
  4. Step 4: Simplify right side
    14,719.12x = 189,681,844.51
  5. Step 5: Solve for x
    x = 189,681,844.51/14,719.12
  6. Step 6: Final answer
    x = 12,886.77

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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.