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Finding the Fourth Proportional to 45,958.78, 68,929.95 and 12,224.98

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Solution

The fourth proportional to 45,958.78, 68,929.95 and 12,224.98 is: 18,335.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,958.78 : 68,929.95 = 12,224.98 : x
  2. Step 2: Convert to fraction form
    45,958.78/68,929.95 = 12,224.98/x
  3. Step 3: Cross multiply
    45,958.78x = 68,929.95 × 12,224.98
  4. Step 4: Simplify right side
    45,958.78x = 842,666,915.50
  5. Step 5: Solve for x
    x = 842,666,915.50/45,958.78
  6. Step 6: Final answer
    x = 18,335.28

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1.5x scale

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.