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Finding the Fourth Proportional to 598,893.40, 826,611.78 and 394,980.76

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Solution

The fourth proportional to 598,893.40, 826,611.78 and 394,980.76 is: 545,165.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,893.40 : 826,611.78 = 394,980.76 : x
  2. Step 2: Convert to fraction form
    598,893.40/826,611.78 = 394,980.76/x
  3. Step 3: Cross multiply
    598,893.40x = 826,611.78 × 394,980.76
  4. Step 4: Simplify right side
    598,893.40x = 326,495,749,089.35
  5. Step 5: Solve for x
    x = 326,495,749,089.35/598,893.40
  6. Step 6: Final answer
    x = 545,165.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.