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Finding the Fourth Proportional to 173,139.80, 259,904.10 and 103,058.60

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Solution

The fourth proportional to 173,139.80, 259,904.10 and 103,058.60 is: 154,703.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,139.80 : 259,904.10 = 103,058.60 : x
  2. Step 2: Convert to fraction form
    173,139.80/259,904.10 = 103,058.60/x
  3. Step 3: Cross multiply
    173,139.80x = 259,904.10 × 103,058.60
  4. Step 4: Simplify right side
    173,139.80x = 26,785,352,680.26
  5. Step 5: Solve for x
    x = 26,785,352,680.26/173,139.80
  6. Step 6: Final answer
    x = 154,703.61

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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.