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Finding the Fourth Proportional to 172,617.84, 238,148.15 and 172,351.72

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Solution

The fourth proportional to 172,617.84, 238,148.15 and 172,351.72 is: 237,781.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,617.84 : 238,148.15 = 172,351.72 : x
  2. Step 2: Convert to fraction form
    172,617.84/238,148.15 = 172,351.72/x
  3. Step 3: Cross multiply
    172,617.84x = 238,148.15 × 172,351.72
  4. Step 4: Simplify right side
    172,617.84x = 41,045,242,703.24
  5. Step 5: Solve for x
    x = 41,045,242,703.24/172,617.84
  6. Step 6: Final answer
    x = 237,781.00

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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.