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Finding the Fourth Proportional to 343,262.20, 514,893.30 and 156,638.20

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Solution

The fourth proportional to 343,262.20, 514,893.30 and 156,638.20 is: 234,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,262.20 : 514,893.30 = 156,638.20 : x
  2. Step 2: Convert to fraction form
    343,262.20/514,893.30 = 156,638.20/x
  3. Step 3: Cross multiply
    343,262.20x = 514,893.30 × 156,638.20
  4. Step 4: Simplify right side
    343,262.20x = 80,651,959,704.06
  5. Step 5: Solve for x
    x = 80,651,959,704.06/343,262.20
  6. Step 6: Final answer
    x = 234,957.30

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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.