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Finding the Fourth Proportional to 15,031.02, 20,742.83 and 8,316.93

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Solution

The fourth proportional to 15,031.02, 20,742.83 and 8,316.93 is: 11,477.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,031.02 : 20,742.83 = 8,316.93 : x
  2. Step 2: Convert to fraction form
    15,031.02/20,742.83 = 8,316.93/x
  3. Step 3: Cross multiply
    15,031.02x = 20,742.83 × 8,316.93
  4. Step 4: Simplify right side
    15,031.02x = 172,516,519.81
  5. Step 5: Solve for x
    x = 172,516,519.81/15,031.02
  6. Step 6: Final answer
    x = 11,477.37

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.