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Finding the Fourth Proportional to 316,278.69, 436,421.52 and 188,927.25

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Solution

The fourth proportional to 316,278.69, 436,421.52 and 188,927.25 is: 260,693.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,278.69 : 436,421.52 = 188,927.25 : x
  2. Step 2: Convert to fraction form
    316,278.69/436,421.52 = 188,927.25/x
  3. Step 3: Cross multiply
    316,278.69x = 436,421.52 × 188,927.25
  4. Step 4: Simplify right side
    316,278.69x = 82,451,917,614.42
  5. Step 5: Solve for x
    x = 82,451,917,614.42/316,278.69
  6. Step 6: Final answer
    x = 260,693.88

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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.