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Finding the Fourth Proportional to 99,511.66, 137,319.87 and 54,799.66

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Solution

The fourth proportional to 99,511.66, 137,319.87 and 54,799.66 is: 75,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,511.66 : 137,319.87 = 54,799.66 : x
  2. Step 2: Convert to fraction form
    99,511.66/137,319.87 = 54,799.66/x
  3. Step 3: Cross multiply
    99,511.66x = 137,319.87 × 54,799.66
  4. Step 4: Simplify right side
    99,511.66x = 7,525,082,187.24
  5. Step 5: Solve for x
    x = 7,525,082,187.24/99,511.66
  6. Step 6: Final answer
    x = 75,620.11

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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.