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Finding the Fourth Proportional to 316,547.55, 436,846.61 and 173,308.57

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Solution

The fourth proportional to 316,547.55, 436,846.61 and 173,308.57 is: 239,171.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,547.55 : 436,846.61 = 173,308.57 : x
  2. Step 2: Convert to fraction form
    316,547.55/436,846.61 = 173,308.57/x
  3. Step 3: Cross multiply
    316,547.55x = 436,846.61 × 173,308.57
  4. Step 4: Simplify right side
    316,547.55x = 75,709,260,629.60
  5. Step 5: Solve for x
    x = 75,709,260,629.60/316,547.55
  6. Step 6: Final answer
    x = 239,171.84

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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.