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Finding the Fourth Proportional to 129,907.80, 194,429.70 and 94,267.80

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Solution

The fourth proportional to 129,907.80, 194,429.70 and 94,267.80 is: 141,088.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,907.80 : 194,429.70 = 94,267.80 : x
  2. Step 2: Convert to fraction form
    129,907.80/194,429.70 = 94,267.80/x
  3. Step 3: Cross multiply
    129,907.80x = 194,429.70 × 94,267.80
  4. Step 4: Simplify right side
    129,907.80x = 18,328,460,073.66
  5. Step 5: Solve for x
    x = 18,328,460,073.66/129,907.80
  6. Step 6: Final answer
    x = 141,088.22

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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.