Home / 200,406.24-276,427.59-128,876.76

Finding the Fourth Proportional to 200,406.24, 276,427.59 and 128,876.76

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Solution

The fourth proportional to 200,406.24, 276,427.59 and 128,876.76 is: 177,764.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,406.24 : 276,427.59 = 128,876.76 : x
  2. Step 2: Convert to fraction form
    200,406.24/276,427.59 = 128,876.76/x
  3. Step 3: Cross multiply
    200,406.24x = 276,427.59 × 128,876.76
  4. Step 4: Simplify right side
    200,406.24x = 35,625,092,173.81
  5. Step 5: Solve for x
    x = 35,625,092,173.81/200,406.24
  6. Step 6: Final answer
    x = 177,764.39

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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.