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Finding the Fourth Proportional to 316,547.88, 436,835.87 and 173,307.88

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Solution

The fourth proportional to 316,547.88, 436,835.87 and 173,307.88 is: 239,164.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,547.88 : 436,835.87 = 173,307.88 : x
  2. Step 2: Convert to fraction form
    316,547.88/436,835.87 = 173,307.88/x
  3. Step 3: Cross multiply
    316,547.88x = 436,835.87 × 173,307.88
  4. Step 4: Simplify right side
    316,547.88x = 75,707,098,537.66
  5. Step 5: Solve for x
    x = 75,707,098,537.66/316,547.88
  6. Step 6: Final answer
    x = 239,164.76

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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.