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Finding the Fourth Proportional to 316,062.99, 436,166.91 and 172,823.13

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Solution

The fourth proportional to 316,062.99, 436,166.91 and 172,823.13 is: 238,495.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,062.99 : 436,166.91 = 172,823.13 : x
  2. Step 2: Convert to fraction form
    316,062.99/436,166.91 = 172,823.13/x
  3. Step 3: Cross multiply
    316,062.99x = 436,166.91 × 172,823.13
  4. Step 4: Simplify right side
    316,062.99x = 75,379,730,588.63
  5. Step 5: Solve for x
    x = 75,379,730,588.63/316,062.99
  6. Step 6: Final answer
    x = 238,495.91

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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.