Home / 74,189.12-111,283.76-18,785.12

Finding the Fourth Proportional to 74,189.12, 111,283.76 and 18,785.12

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Solution

The fourth proportional to 74,189.12, 111,283.76 and 18,785.12 is: 28,177.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,189.12 : 111,283.76 = 18,785.12 : x
  2. Step 2: Convert to fraction form
    74,189.12/111,283.76 = 18,785.12/x
  3. Step 3: Cross multiply
    74,189.12x = 111,283.76 × 18,785.12
  4. Step 4: Simplify right side
    74,189.12x = 2,090,478,785.65
  5. Step 5: Solve for x
    x = 2,090,478,785.65/74,189.12
  6. Step 6: Final answer
    x = 28,177.70

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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.