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Finding the Fourth Proportional to 18,749.88, 28,124.08 and 4,710.01

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Solution

The fourth proportional to 18,749.88, 28,124.08 and 4,710.01 is: 7,064.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.88 : 28,124.08 = 4,710.01 : x
  2. Step 2: Convert to fraction form
    18,749.88/28,124.08 = 4,710.01/x
  3. Step 3: Cross multiply
    18,749.88x = 28,124.08 × 4,710.01
  4. Step 4: Simplify right side
    18,749.88x = 132,464,698.04
  5. Step 5: Solve for x
    x = 132,464,698.04/18,749.88
  6. Step 6: Final answer
    x = 7,064.83

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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.