Home / 199,828.16-299,676-66,671.36

Finding the Fourth Proportional to 199,828.16, 299,676 and 66,671.36

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Solution

The fourth proportional to 199,828.16, 299,676 and 66,671.36 is: 99,984.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,828.16 : 299,676 = 66,671.36 : x
  2. Step 2: Convert to fraction form
    199,828.16/299,676 = 66,671.36/x
  3. Step 3: Cross multiply
    199,828.16x = 299,676 × 66,671.36
  4. Step 4: Simplify right side
    199,828.16x = 19,979,806,479.36
  5. Step 5: Solve for x
    x = 19,979,806,479.36/199,828.16
  6. Step 6: Final answer
    x = 99,984.94

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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.