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Finding the Fourth Proportional to 112,063.81, 168,108.02 and 55,918.05

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Solution

The fourth proportional to 112,063.81, 168,108.02 and 55,918.05 is: 83,883.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,063.81 : 168,108.02 = 55,918.05 : x
  2. Step 2: Convert to fraction form
    112,063.81/168,108.02 = 55,918.05/x
  3. Step 3: Cross multiply
    112,063.81x = 168,108.02 × 55,918.05
  4. Step 4: Simplify right side
    112,063.81x = 9,400,272,667.76
  5. Step 5: Solve for x
    x = 9,400,272,667.76/112,063.81
  6. Step 6: Final answer
    x = 83,883.21

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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.