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Finding the Fourth Proportional to 99,558.65, 137,390.94 and 54,846.65

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Solution

The fourth proportional to 99,558.65, 137,390.94 and 54,846.65 is: 75,688.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,558.65 : 137,390.94 = 54,846.65 : x
  2. Step 2: Convert to fraction form
    99,558.65/137,390.94 = 54,846.65/x
  3. Step 3: Cross multiply
    99,558.65x = 137,390.94 × 54,846.65
  4. Step 4: Simplify right side
    99,558.65x = 7,535,432,525.12
  5. Step 5: Solve for x
    x = 7,535,432,525.12/99,558.65
  6. Step 6: Final answer
    x = 75,688.38

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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.