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Finding the Fourth Proportional to 100,494.49, 151,343.38 and 91,526.43

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Solution

The fourth proportional to 100,494.49, 151,343.38 and 91,526.43 is: 137,837.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,494.49 : 151,343.38 = 91,526.43 : x
  2. Step 2: Convert to fraction form
    100,494.49/151,343.38 = 91,526.43/x
  3. Step 3: Cross multiply
    100,494.49x = 151,343.38 × 91,526.43
  4. Step 4: Simplify right side
    100,494.49x = 13,851,918,518.82
  5. Step 5: Solve for x
    x = 13,851,918,518.82/100,494.49
  6. Step 6: Final answer
    x = 137,837.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.