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Finding the Fourth Proportional to 371,871.09, 557,058.15 and 171,916.11

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Solution

The fourth proportional to 371,871.09, 557,058.15 and 171,916.11 is: 257,528.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,871.09 : 557,058.15 = 171,916.11 : x
  2. Step 2: Convert to fraction form
    371,871.09/557,058.15 = 171,916.11/x
  3. Step 3: Cross multiply
    371,871.09x = 557,058.15 × 171,916.11
  4. Step 4: Simplify right side
    371,871.09x = 95,767,270,191.80
  5. Step 5: Solve for x
    x = 95,767,270,191.80/371,871.09
  6. Step 6: Final answer
    x = 257,528.14

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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.