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Finding the Fourth Proportional to 172,328.01, 258,492.16 and 54,008.57

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Solution

The fourth proportional to 172,328.01, 258,492.16 and 54,008.57 is: 81,012.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,328.01 : 258,492.16 = 54,008.57 : x
  2. Step 2: Convert to fraction form
    172,328.01/258,492.16 = 54,008.57/x
  3. Step 3: Cross multiply
    172,328.01x = 258,492.16 × 54,008.57
  4. Step 4: Simplify right side
    172,328.01x = 13,960,792,631.55
  5. Step 5: Solve for x
    x = 13,960,792,631.55/172,328.01
  6. Step 6: Final answer
    x = 81,012.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.