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Finding the Fourth Proportional to 125,125.98, 187,699.31 and 36,379.35

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Solution

The fourth proportional to 125,125.98, 187,699.31 and 36,379.35 is: 54,572.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,125.98 : 187,699.31 = 36,379.35 : x
  2. Step 2: Convert to fraction form
    125,125.98/187,699.31 = 36,379.35/x
  3. Step 3: Cross multiply
    125,125.98x = 187,699.31 × 36,379.35
  4. Step 4: Simplify right side
    125,125.98x = 6,828,378,711.35
  5. Step 5: Solve for x
    x = 6,828,378,711.35/125,125.98
  6. Step 6: Final answer
    x = 54,572.03

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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.