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Finding the Fourth Proportional to 316,448.96, 436,700.46 and 173,210.12

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Solution

The fourth proportional to 316,448.96, 436,700.46 and 173,210.12 is: 239,030.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,448.96 : 436,700.46 = 173,210.12 : x
  2. Step 2: Convert to fraction form
    316,448.96/436,700.46 = 173,210.12/x
  3. Step 3: Cross multiply
    316,448.96x = 436,700.46 × 173,210.12
  4. Step 4: Simplify right side
    316,448.96x = 75,640,939,080.66
  5. Step 5: Solve for x
    x = 75,640,939,080.66/316,448.96
  6. Step 6: Final answer
    x = 239,030.46

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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.