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Finding the Fourth Proportional to 395,636.18, 545,977.19 and 214,352.71

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Solution

The fourth proportional to 395,636.18, 545,977.19 and 214,352.71 is: 295,806.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,636.18 : 545,977.19 = 214,352.71 : x
  2. Step 2: Convert to fraction form
    395,636.18/545,977.19 = 214,352.71/x
  3. Step 3: Cross multiply
    395,636.18x = 545,977.19 × 214,352.71
  4. Step 4: Simplify right side
    395,636.18x = 117,031,689,445.62
  5. Step 5: Solve for x
    x = 117,031,689,445.62/395,636.18
  6. Step 6: Final answer
    x = 295,806.34

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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.