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Finding the Fourth Proportional to 316,055.34, 436,120.65 and 186,997.77

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Solution

The fourth proportional to 316,055.34, 436,120.65 and 186,997.77 is: 258,035.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,055.34 : 436,120.65 = 186,997.77 : x
  2. Step 2: Convert to fraction form
    316,055.34/436,120.65 = 186,997.77/x
  3. Step 3: Cross multiply
    316,055.34x = 436,120.65 × 186,997.77
  4. Step 4: Simplify right side
    316,055.34x = 81,553,589,000.95
  5. Step 5: Solve for x
    x = 81,553,589,000.95/316,055.34
  6. Step 6: Final answer
    x = 258,035.79

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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.