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Finding the Fourth Proportional to 125,817.90, 188,720.73 and 46,926.06

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Solution

The fourth proportional to 125,817.90, 188,720.73 and 46,926.06 is: 70,386.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,817.90 : 188,720.73 = 46,926.06 : x
  2. Step 2: Convert to fraction form
    125,817.90/188,720.73 = 46,926.06/x
  3. Step 3: Cross multiply
    125,817.90x = 188,720.73 × 46,926.06
  4. Step 4: Simplify right side
    125,817.90x = 8,855,920,299.22
  5. Step 5: Solve for x
    x = 8,855,920,299.22/125,817.90
  6. Step 6: Final answer
    x = 70,386.81

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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.