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Finding the Fourth Proportional to 316,585.87, 436,885.18 and 171,388.41

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Solution

The fourth proportional to 316,585.87, 436,885.18 and 171,388.41 is: 236,514.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,585.87 : 436,885.18 = 171,388.41 : x
  2. Step 2: Convert to fraction form
    316,585.87/436,885.18 = 171,388.41/x
  3. Step 3: Cross multiply
    316,585.87x = 436,885.18 × 171,388.41
  4. Step 4: Simplify right side
    316,585.87x = 74,877,056,352.76
  5. Step 5: Solve for x
    x = 74,877,056,352.76/316,585.87
  6. Step 6: Final answer
    x = 236,514.21

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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.