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Finding the Fourth Proportional to 316,521.36, 436,829.16 and 189,194.22

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Solution

The fourth proportional to 316,521.36, 436,829.16 and 189,194.22 is: 261,105.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,521.36 : 436,829.16 = 189,194.22 : x
  2. Step 2: Convert to fraction form
    316,521.36/436,829.16 = 189,194.22/x
  3. Step 3: Cross multiply
    316,521.36x = 436,829.16 × 189,194.22
  4. Step 4: Simplify right side
    316,521.36x = 82,645,552,199.46
  5. Step 5: Solve for x
    x = 82,645,552,199.46/316,521.36
  6. Step 6: Final answer
    x = 261,105.77

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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.