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Finding the Fourth Proportional to 144,316.80, 199,159.44 and 80,658.72

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Solution

The fourth proportional to 144,316.80, 199,159.44 and 80,658.72 is: 111,310.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,316.80 : 199,159.44 = 80,658.72 : x
  2. Step 2: Convert to fraction form
    144,316.80/199,159.44 = 80,658.72/x
  3. Step 3: Cross multiply
    144,316.80x = 199,159.44 × 80,658.72
  4. Step 4: Simplify right side
    144,316.80x = 16,063,945,506.32
  5. Step 5: Solve for x
    x = 16,063,945,506.32/144,316.80
  6. Step 6: Final answer
    x = 111,310.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.