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Finding the Fourth Proportional to 125,681.83, 188,463.36 and 45,664.03

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Solution

The fourth proportional to 125,681.83, 188,463.36 and 45,664.03 is: 68,474.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,681.83 : 188,463.36 = 45,664.03 : x
  2. Step 2: Convert to fraction form
    125,681.83/188,463.36 = 45,664.03/x
  3. Step 3: Cross multiply
    125,681.83x = 188,463.36 × 45,664.03
  4. Step 4: Simplify right side
    125,681.83x = 8,605,996,144.85
  5. Step 5: Solve for x
    x = 8,605,996,144.85/125,681.83
  6. Step 6: Final answer
    x = 68,474.47

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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.