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Finding the Fourth Proportional to 127,957.70, 191,936.55 and 121,045.70

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Solution

The fourth proportional to 127,957.70, 191,936.55 and 121,045.70 is: 181,568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,957.70 : 191,936.55 = 121,045.70 : x
  2. Step 2: Convert to fraction form
    127,957.70/191,936.55 = 121,045.70/x
  3. Step 3: Cross multiply
    127,957.70x = 191,936.55 × 121,045.70
  4. Step 4: Simplify right side
    127,957.70x = 23,233,094,050.34
  5. Step 5: Solve for x
    x = 23,233,094,050.34/127,957.70
  6. Step 6: Final answer
    x = 181,568.55

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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.