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Finding the Fourth Proportional to 316,444.92, 436,690.30 and 171,247.34

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Solution

The fourth proportional to 316,444.92, 436,690.30 and 171,247.34 is: 236,319.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,444.92 : 436,690.30 = 171,247.34 : x
  2. Step 2: Convert to fraction form
    316,444.92/436,690.30 = 171,247.34/x
  3. Step 3: Cross multiply
    316,444.92x = 436,690.30 × 171,247.34
  4. Step 4: Simplify right side
    316,444.92x = 74,782,052,278.80
  5. Step 5: Solve for x
    x = 74,782,052,278.80/316,444.92
  6. Step 6: Final answer
    x = 236,319.33

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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.