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Finding the Fourth Proportional to 343,964.90, 515,774.55 and 156,764.90

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Solution

The fourth proportional to 343,964.90, 515,774.55 and 156,764.90 is: 235,068.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,964.90 : 515,774.55 = 156,764.90 : x
  2. Step 2: Convert to fraction form
    343,964.90/515,774.55 = 156,764.90/x
  3. Step 3: Cross multiply
    343,964.90x = 515,774.55 × 156,764.90
  4. Step 4: Simplify right side
    343,964.90x = 80,855,345,753.30
  5. Step 5: Solve for x
    x = 80,855,345,753.30/343,964.90
  6. Step 6: Final answer
    x = 235,068.59

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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.