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Finding the Fourth Proportional to 441,168.72, 661,430.46 and 141,478.71

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Solution

The fourth proportional to 441,168.72, 661,430.46 and 141,478.71 is: 212,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,168.72 : 661,430.46 = 141,478.71 : x
  2. Step 2: Convert to fraction form
    441,168.72/661,430.46 = 141,478.71/x
  3. Step 3: Cross multiply
    441,168.72x = 661,430.46 × 141,478.71
  4. Step 4: Simplify right side
    441,168.72x = 93,578,328,235.51
  5. Step 5: Solve for x
    x = 93,578,328,235.51/441,168.72
  6. Step 6: Final answer
    x = 212,114.60

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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.