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Finding the Fourth Proportional to 127,554.56, 191,316.48 and 74,276.48

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Solution

The fourth proportional to 127,554.56, 191,316.48 and 74,276.48 is: 111,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,554.56 : 191,316.48 = 74,276.48 : x
  2. Step 2: Convert to fraction form
    127,554.56/191,316.48 = 74,276.48/x
  3. Step 3: Cross multiply
    127,554.56x = 191,316.48 × 74,276.48
  4. Step 4: Simplify right side
    127,554.56x = 14,210,314,700.39
  5. Step 5: Solve for x
    x = 14,210,314,700.39/127,554.56
  6. Step 6: Final answer
    x = 111,405.78

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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.