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Finding the Fourth Proportional to 158,457.80, 237,611.51 and 91,918.32

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Solution

The fourth proportional to 158,457.80, 237,611.51 and 91,918.32 is: 137,833.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,457.80 : 237,611.51 = 91,918.32 : x
  2. Step 2: Convert to fraction form
    158,457.80/237,611.51 = 91,918.32/x
  3. Step 3: Cross multiply
    158,457.80x = 237,611.51 × 91,918.32
  4. Step 4: Simplify right side
    158,457.80x = 21,840,851,932.70
  5. Step 5: Solve for x
    x = 21,840,851,932.70/158,457.80
  6. Step 6: Final answer
    x = 137,833.87

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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.