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Finding the Fourth Proportional to 74,548.98, 111,785.16 and 21,951.63

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Solution

The fourth proportional to 74,548.98, 111,785.16 and 21,951.63 is: 32,916.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,548.98 : 111,785.16 = 21,951.63 : x
  2. Step 2: Convert to fraction form
    74,548.98/111,785.16 = 21,951.63/x
  3. Step 3: Cross multiply
    74,548.98x = 111,785.16 × 21,951.63
  4. Step 4: Simplify right side
    74,548.98x = 2,453,866,471.81
  5. Step 5: Solve for x
    x = 2,453,866,471.81/74,548.98
  6. Step 6: Final answer
    x = 32,916.16

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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.