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Finding the Fourth Proportional to 112,641.80, 168,962.70 and 29,544.20

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Solution

The fourth proportional to 112,641.80, 168,962.70 and 29,544.20 is: 44,316.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,641.80 : 168,962.70 = 29,544.20 : x
  2. Step 2: Convert to fraction form
    112,641.80/168,962.70 = 29,544.20/x
  3. Step 3: Cross multiply
    112,641.80x = 168,962.70 × 29,544.20
  4. Step 4: Simplify right side
    112,641.80x = 4,991,867,801.34
  5. Step 5: Solve for x
    x = 4,991,867,801.34/112,641.80
  6. Step 6: Final answer
    x = 44,316.30

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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.