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Finding the Fourth Proportional to 48,609.72, 72,915.73 and 13,071.11

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Solution

The fourth proportional to 48,609.72, 72,915.73 and 13,071.11 is: 19,606.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,609.72 : 72,915.73 = 13,071.11 : x
  2. Step 2: Convert to fraction form
    48,609.72/72,915.73 = 13,071.11/x
  3. Step 3: Cross multiply
    48,609.72x = 72,915.73 × 13,071.11
  4. Step 4: Simplify right side
    48,609.72x = 953,089,130.30
  5. Step 5: Solve for x
    x = 953,089,130.30/48,609.72
  6. Step 6: Final answer
    x = 19,606.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.