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Finding the Fourth Proportional to 91,574.88, 137,340.12 and 25,015.32

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Solution

The fourth proportional to 91,574.88, 137,340.12 and 25,015.32 is: 37,516.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,574.88 : 137,340.12 = 25,015.32 : x
  2. Step 2: Convert to fraction form
    91,574.88/137,340.12 = 25,015.32/x
  3. Step 3: Cross multiply
    91,574.88x = 137,340.12 × 25,015.32
  4. Step 4: Simplify right side
    91,574.88x = 3,435,607,050.64
  5. Step 5: Solve for x
    x = 3,435,607,050.64/91,574.88
  6. Step 6: Final answer
    x = 37,516.92

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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.