Home / 209,629.44-289,223.76-127,975.20

Finding the Fourth Proportional to 209,629.44, 289,223.76 and 127,975.20

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Solution

The fourth proportional to 209,629.44, 289,223.76 and 127,975.20 is: 176,566.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,629.44 : 289,223.76 = 127,975.20 : x
  2. Step 2: Convert to fraction form
    209,629.44/289,223.76 = 127,975.20/x
  3. Step 3: Cross multiply
    209,629.44x = 289,223.76 × 127,975.20
  4. Step 4: Simplify right side
    209,629.44x = 37,013,468,530.75
  5. Step 5: Solve for x
    x = 37,013,468,530.75/209,629.44
  6. Step 6: Final answer
    x = 176,566.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.