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Finding the Fourth Proportional to 411,167.77, 616,809.63 and 126,881.46

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Solution

The fourth proportional to 411,167.77, 616,809.63 and 126,881.46 is: 190,340.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,167.77 : 616,809.63 = 126,881.46 : x
  2. Step 2: Convert to fraction form
    411,167.77/616,809.63 = 126,881.46/x
  3. Step 3: Cross multiply
    411,167.77x = 616,809.63 × 126,881.46
  4. Step 4: Simplify right side
    411,167.77x = 78,261,702,678.00
  5. Step 5: Solve for x
    x = 78,261,702,678.00/411,167.77
  6. Step 6: Final answer
    x = 190,340.07

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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.