Home / 209,623.44-289,215.48-127,969.20

Finding the Fourth Proportional to 209,623.44, 289,215.48 and 127,969.20

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Solution

The fourth proportional to 209,623.44, 289,215.48 and 127,969.20 is: 176,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,623.44 : 289,215.48 = 127,969.20 : x
  2. Step 2: Convert to fraction form
    209,623.44/289,215.48 = 127,969.20/x
  3. Step 3: Cross multiply
    209,623.44x = 289,215.48 × 127,969.20
  4. Step 4: Simplify right side
    209,623.44x = 37,010,673,603.22
  5. Step 5: Solve for x
    x = 37,010,673,603.22/209,623.44
  6. Step 6: Final answer
    x = 176,557.90

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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.