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Finding the Fourth Proportional to 127,903.79, 191,988.76 and 94,207.86

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Solution

The fourth proportional to 127,903.79, 191,988.76 and 94,207.86 is: 141,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,903.79 : 191,988.76 = 94,207.86 : x
  2. Step 2: Convert to fraction form
    127,903.79/191,988.76 = 94,207.86/x
  3. Step 3: Cross multiply
    127,903.79x = 191,988.76 × 94,207.86
  4. Step 4: Simplify right side
    127,903.79x = 18,086,848,999.87
  5. Step 5: Solve for x
    x = 18,086,848,999.87/127,903.79
  6. Step 6: Final answer
    x = 141,409.80

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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.