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Finding the Fourth Proportional to 316,428.00, 436,670.64 and 173,188.05

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Solution

The fourth proportional to 316,428.00, 436,670.64 and 173,188.05 is: 238,999.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,428.00 : 436,670.64 = 173,188.05 : x
  2. Step 2: Convert to fraction form
    316,428.00/436,670.64 = 173,188.05/x
  3. Step 3: Cross multiply
    316,428.00x = 436,670.64 × 173,188.05
  4. Step 4: Simplify right side
    316,428.00x = 75,626,135,543.01
  5. Step 5: Solve for x
    x = 75,626,135,543.01/316,428.00
  6. Step 6: Final answer
    x = 238,999.50

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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.