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Finding the Fourth Proportional to 58,420.75, 87,631.09 and 14,047.49

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Solution

The fourth proportional to 58,420.75, 87,631.09 and 14,047.49 is: 21,071.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,420.75 : 87,631.09 = 14,047.49 : x
  2. Step 2: Convert to fraction form
    58,420.75/87,631.09 = 14,047.49/x
  3. Step 3: Cross multiply
    58,420.75x = 87,631.09 × 14,047.49
  4. Step 4: Simplify right side
    58,420.75x = 1,230,996,790.23
  5. Step 5: Solve for x
    x = 1,230,996,790.23/58,420.75
  6. Step 6: Final answer
    x = 21,071.23

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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.