Home / 412,568.91-618,862.01-132,085.35

Finding the Fourth Proportional to 412,568.91, 618,862.01 and 132,085.35

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Solution

The fourth proportional to 412,568.91, 618,862.01 and 132,085.35 is: 198,130.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,568.91 : 618,862.01 = 132,085.35 : x
  2. Step 2: Convert to fraction form
    412,568.91/618,862.01 = 132,085.35/x
  3. Step 3: Cross multiply
    412,568.91x = 618,862.01 × 132,085.35
  4. Step 4: Simplify right side
    412,568.91x = 81,742,604,532.13
  5. Step 5: Solve for x
    x = 81,742,604,532.13/412,568.91
  6. Step 6: Final answer
    x = 198,130.79

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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.