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Finding the Fourth Proportional to 316,636.94, 436,968.87 and 173,410.58

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Solution

The fourth proportional to 316,636.94, 436,968.87 and 173,410.58 is: 239,312.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,636.94 : 436,968.87 = 173,410.58 : x
  2. Step 2: Convert to fraction form
    316,636.94/436,968.87 = 173,410.58/x
  3. Step 3: Cross multiply
    316,636.94x = 436,968.87 × 173,410.58
  4. Step 4: Simplify right side
    316,636.94x = 75,775,025,188.64
  5. Step 5: Solve for x
    x = 75,775,025,188.64/316,636.94
  6. Step 6: Final answer
    x = 239,312.02

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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.