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Finding the Fourth Proportional to 621,514.88, 860,938.87 and 608,917.76

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Solution

The fourth proportional to 621,514.88, 860,938.87 and 608,917.76 is: 843,489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,514.88 : 860,938.87 = 608,917.76 : x
  2. Step 2: Convert to fraction form
    621,514.88/860,938.87 = 608,917.76/x
  3. Step 3: Cross multiply
    621,514.88x = 860,938.87 × 608,917.76
  4. Step 4: Simplify right side
    621,514.88x = 524,240,968,217.33
  5. Step 5: Solve for x
    x = 524,240,968,217.33/621,514.88
  6. Step 6: Final answer
    x = 843,489.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.