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Finding the Fourth Proportional to 29,927.60, 44,988.60 and 21,222.80

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Solution

The fourth proportional to 29,927.60, 44,988.60 and 21,222.80 is: 31,903.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,927.60 : 44,988.60 = 21,222.80 : x
  2. Step 2: Convert to fraction form
    29,927.60/44,988.60 = 21,222.80/x
  3. Step 3: Cross multiply
    29,927.60x = 44,988.60 × 21,222.80
  4. Step 4: Simplify right side
    29,927.60x = 954,784,060.08
  5. Step 5: Solve for x
    x = 954,784,060.08/29,927.60
  6. Step 6: Final answer
    x = 31,903.13

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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.