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Finding the Fourth Proportional to 543,786.63, 815,762.93 and 277,401.81

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Solution

The fourth proportional to 543,786.63, 815,762.93 and 277,401.81 is: 416,145.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,786.63 : 815,762.93 = 277,401.81 : x
  2. Step 2: Convert to fraction form
    543,786.63/815,762.93 = 277,401.81/x
  3. Step 3: Cross multiply
    543,786.63x = 815,762.93 × 277,401.81
  4. Step 4: Simplify right side
    543,786.63x = 226,294,111,925.89
  5. Step 5: Solve for x
    x = 226,294,111,925.89/543,786.63
  6. Step 6: Final answer
    x = 416,145.05

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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.