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Finding the Fourth Proportional to 251,643.31, 347,279.21 and 156,180.76

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Solution

The fourth proportional to 251,643.31, 347,279.21 and 156,180.76 is: 215,536.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,643.31 : 347,279.21 = 156,180.76 : x
  2. Step 2: Convert to fraction form
    251,643.31/347,279.21 = 156,180.76/x
  3. Step 3: Cross multiply
    251,643.31x = 347,279.21 × 156,180.76
  4. Step 4: Simplify right side
    251,643.31x = 54,238,330,950.00
  5. Step 5: Solve for x
    x = 54,238,330,950.00/251,643.31
  6. Step 6: Final answer
    x = 215,536.55

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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.