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Finding the Fourth Proportional to 136,178.82, 187,926.76 and 76,562.82

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Solution

The fourth proportional to 136,178.82, 187,926.76 and 76,562.82 is: 105,656.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,178.82 : 187,926.76 = 76,562.82 : x
  2. Step 2: Convert to fraction form
    136,178.82/187,926.76 = 76,562.82/x
  3. Step 3: Cross multiply
    136,178.82x = 187,926.76 × 76,562.82
  4. Step 4: Simplify right side
    136,178.82x = 14,388,202,699.06
  5. Step 5: Solve for x
    x = 14,388,202,699.06/136,178.82
  6. Step 6: Final answer
    x = 105,656.69

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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.