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Finding the Fourth Proportional to 253,612.36, 349,980.78 and 140,432.68

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Solution

The fourth proportional to 253,612.36, 349,980.78 and 140,432.68 is: 193,794.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,612.36 : 349,980.78 = 140,432.68 : x
  2. Step 2: Convert to fraction form
    253,612.36/349,980.78 = 140,432.68/x
  3. Step 3: Cross multiply
    253,612.36x = 349,980.78 × 140,432.68
  4. Step 4: Simplify right side
    253,612.36x = 49,148,738,883.89
  5. Step 5: Solve for x
    x = 49,148,738,883.89/253,612.36
  6. Step 6: Final answer
    x = 193,794.73

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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.