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Finding the Fourth Proportional to 47,290.70, 70,929.36 and 14,014.28

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Solution

The fourth proportional to 47,290.70, 70,929.36 and 14,014.28 is: 21,019.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,290.70 : 70,929.36 = 14,014.28 : x
  2. Step 2: Convert to fraction form
    47,290.70/70,929.36 = 14,014.28/x
  3. Step 3: Cross multiply
    47,290.70x = 70,929.36 × 14,014.28
  4. Step 4: Simplify right side
    47,290.70x = 994,023,911.26
  5. Step 5: Solve for x
    x = 994,023,911.26/47,290.70
  6. Step 6: Final answer
    x = 21,019.44

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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.