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Finding the Fourth Proportional to 316,543.76, 436,830.48 and 173,313.04

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Solution

The fourth proportional to 316,543.76, 436,830.48 and 173,313.04 is: 239,172.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,543.76 : 436,830.48 = 173,313.04 : x
  2. Step 2: Convert to fraction form
    316,543.76/436,830.48 = 173,313.04/x
  3. Step 3: Cross multiply
    316,543.76x = 436,830.48 × 173,313.04
  4. Step 4: Simplify right side
    316,543.76x = 75,708,418,453.46
  5. Step 5: Solve for x
    x = 75,708,418,453.46/316,543.76
  6. Step 6: Final answer
    x = 239,172.05

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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.