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Finding the Fourth Proportional to 117,029.80, 175,587.90 and 112,709.80

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Solution

The fourth proportional to 117,029.80, 175,587.90 and 112,709.80 is: 169,106.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,029.80 : 175,587.90 = 112,709.80 : x
  2. Step 2: Convert to fraction form
    117,029.80/175,587.90 = 112,709.80/x
  3. Step 3: Cross multiply
    117,029.80x = 175,587.90 × 112,709.80
  4. Step 4: Simplify right side
    117,029.80x = 19,790,477,091.42
  5. Step 5: Solve for x
    x = 19,790,477,091.42/117,029.80
  6. Step 6: Final answer
    x = 169,106.31

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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.