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Finding the Fourth Proportional to 171,813.29, 257,616.32 and 77,026.30

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Solution

The fourth proportional to 171,813.29, 257,616.32 and 77,026.30 is: 115,493.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,813.29 : 257,616.32 = 77,026.30 : x
  2. Step 2: Convert to fraction form
    171,813.29/257,616.32 = 77,026.30/x
  3. Step 3: Cross multiply
    171,813.29x = 257,616.32 × 77,026.30
  4. Step 4: Simplify right side
    171,813.29x = 19,843,230,920.04
  5. Step 5: Solve for x
    x = 19,843,230,920.04/171,813.29
  6. Step 6: Final answer
    x = 115,493.00

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1.5x scale

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.