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Finding the Fourth Proportional to 186,393.80, 279,314.22 and 136,903.88

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Solution

The fourth proportional to 186,393.80, 279,314.22 and 136,903.88 is: 205,152.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,393.80 : 279,314.22 = 136,903.88 : x
  2. Step 2: Convert to fraction form
    186,393.80/279,314.22 = 136,903.88/x
  3. Step 3: Cross multiply
    186,393.80x = 279,314.22 × 136,903.88
  4. Step 4: Simplify right side
    186,393.80x = 38,239,200,457.17
  5. Step 5: Solve for x
    x = 38,239,200,457.17/186,393.80
  6. Step 6: Final answer
    x = 205,152.75

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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.