Home / 411,100.31-616,756.86-126,784.58

Finding the Fourth Proportional to 411,100.31, 616,756.86 and 126,784.58

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Solution

The fourth proportional to 411,100.31, 616,756.86 and 126,784.58 is: 190,209.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,100.31 : 616,756.86 = 126,784.58 : x
  2. Step 2: Convert to fraction form
    411,100.31/616,756.86 = 126,784.58/x
  3. Step 3: Cross multiply
    411,100.31x = 616,756.86 × 126,784.58
  4. Step 4: Simplify right side
    411,100.31x = 78,195,256,373.43
  5. Step 5: Solve for x
    x = 78,195,256,373.43/411,100.31
  6. Step 6: Final answer
    x = 190,209.67

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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.