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Finding the Fourth Proportional to 316,362.42, 436,580.15 and 173,122.47

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Solution

The fourth proportional to 316,362.42, 436,580.15 and 173,122.47 is: 238,909.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,362.42 : 436,580.15 = 173,122.47 : x
  2. Step 2: Convert to fraction form
    316,362.42/436,580.15 = 173,122.47/x
  3. Step 3: Cross multiply
    316,362.42x = 436,580.15 × 173,122.47
  4. Step 4: Simplify right side
    316,362.42x = 75,581,833,055.36
  5. Step 5: Solve for x
    x = 75,581,833,055.36/316,362.42
  6. Step 6: Final answer
    x = 238,909.01

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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.