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Finding the Fourth Proportional to 127,394.40, 191,313.36 and 117,380.40

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Solution

The fourth proportional to 127,394.40, 191,313.36 and 117,380.40 is: 176,274.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,394.40 : 191,313.36 = 117,380.40 : x
  2. Step 2: Convert to fraction form
    127,394.40/191,313.36 = 117,380.40/x
  3. Step 3: Cross multiply
    127,394.40x = 191,313.36 × 117,380.40
  4. Step 4: Simplify right side
    127,394.40x = 22,456,438,722.14
  5. Step 5: Solve for x
    x = 22,456,438,722.14/127,394.40
  6. Step 6: Final answer
    x = 176,274.93

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1.5x scale

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.