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Finding the Fourth Proportional to 541,920.78, 812,907.09 and 261,673.74

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Solution

The fourth proportional to 541,920.78, 812,907.09 and 261,673.74 is: 392,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,920.78 : 812,907.09 = 261,673.74 : x
  2. Step 2: Convert to fraction form
    541,920.78/812,907.09 = 261,673.74/x
  3. Step 3: Cross multiply
    541,920.78x = 812,907.09 × 261,673.74
  4. Step 4: Simplify right side
    541,920.78x = 212,716,438,512.82
  5. Step 5: Solve for x
    x = 212,716,438,512.82/541,920.78
  6. Step 6: Final answer
    x = 392,523.13

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1.5x scale

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.