Home / 209,977.04-289,716.36-128,284.27

Finding the Fourth Proportional to 209,977.04, 289,716.36 and 128,284.27

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Solution

The fourth proportional to 209,977.04, 289,716.36 and 128,284.27 is: 177,000.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,977.04 : 289,716.36 = 128,284.27 : x
  2. Step 2: Convert to fraction form
    209,977.04/289,716.36 = 128,284.27/x
  3. Step 3: Cross multiply
    209,977.04x = 289,716.36 × 128,284.27
  4. Step 4: Simplify right side
    209,977.04x = 37,166,050,544.30
  5. Step 5: Solve for x
    x = 37,166,050,544.30/209,977.04
  6. Step 6: Final answer
    x = 177,000.54

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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.