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Finding the Fourth Proportional to 125,058.83, 172,606.70 and 84,785.54

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Solution

The fourth proportional to 125,058.83, 172,606.70 and 84,785.54 is: 117,021.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,058.83 : 172,606.70 = 84,785.54 : x
  2. Step 2: Convert to fraction form
    125,058.83/172,606.70 = 84,785.54/x
  3. Step 3: Cross multiply
    125,058.83x = 172,606.70 × 84,785.54
  4. Step 4: Simplify right side
    125,058.83x = 14,634,551,616.05
  5. Step 5: Solve for x
    x = 14,634,551,616.05/125,058.83
  6. Step 6: Final answer
    x = 117,021.34

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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.