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Finding the Fourth Proportional to 127,967.40, 191,951.10 and 112,415.40

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Solution

The fourth proportional to 127,967.40, 191,951.10 and 112,415.40 is: 168,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,967.40 : 191,951.10 = 112,415.40 : x
  2. Step 2: Convert to fraction form
    127,967.40/191,951.10 = 112,415.40/x
  3. Step 3: Cross multiply
    127,967.40x = 191,951.10 × 112,415.40
  4. Step 4: Simplify right side
    127,967.40x = 21,578,259,686.94
  5. Step 5: Solve for x
    x = 21,578,259,686.94/127,967.40
  6. Step 6: Final answer
    x = 168,623.10

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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.