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Finding the Fourth Proportional to 127,849.76, 191,840.36 and 98,055.39

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Solution

The fourth proportional to 127,849.76, 191,840.36 and 98,055.39 is: 147,133.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,849.76 : 191,840.36 = 98,055.39 : x
  2. Step 2: Convert to fraction form
    127,849.76/191,840.36 = 98,055.39/x
  3. Step 3: Cross multiply
    127,849.76x = 191,840.36 × 98,055.39
  4. Step 4: Simplify right side
    127,849.76x = 18,810,980,827.26
  5. Step 5: Solve for x
    x = 18,810,980,827.26/127,849.76
  6. Step 6: Final answer
    x = 147,133.49

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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.