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Finding the Fourth Proportional to 111,989.40, 168,048.90 and 41,875.80

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Solution

The fourth proportional to 111,989.40, 168,048.90 and 41,875.80 is: 62,837.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,989.40 : 168,048.90 = 41,875.80 : x
  2. Step 2: Convert to fraction form
    111,989.40/168,048.90 = 41,875.80/x
  3. Step 3: Cross multiply
    111,989.40x = 168,048.90 × 41,875.80
  4. Step 4: Simplify right side
    111,989.40x = 7,037,182,126.62
  5. Step 5: Solve for x
    x = 7,037,182,126.62/111,989.40
  6. Step 6: Final answer
    x = 62,837.93

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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.