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Finding the Fourth Proportional to 436,730.41, 655,095.61 and 121,187.41

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Solution

The fourth proportional to 436,730.41, 655,095.61 and 121,187.41 is: 181,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,730.41 : 655,095.61 = 121,187.41 : x
  2. Step 2: Convert to fraction form
    436,730.41/655,095.61 = 121,187.41/x
  3. Step 3: Cross multiply
    436,730.41x = 655,095.61 × 121,187.41
  4. Step 4: Simplify right side
    436,730.41x = 79,389,340,278.27
  5. Step 5: Solve for x
    x = 79,389,340,278.27/436,730.41
  6. Step 6: Final answer
    x = 181,781.11

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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.