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Finding the Fourth Proportional to 127,661.40, 191,492.10 and 113,883.30

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Solution

The fourth proportional to 127,661.40, 191,492.10 and 113,883.30 is: 170,824.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,661.40 : 191,492.10 = 113,883.30 : x
  2. Step 2: Convert to fraction form
    127,661.40/191,492.10 = 113,883.30/x
  3. Step 3: Cross multiply
    127,661.40x = 191,492.10 × 113,883.30
  4. Step 4: Simplify right side
    127,661.40x = 21,807,752,271.93
  5. Step 5: Solve for x
    x = 21,807,752,271.93/127,661.40
  6. Step 6: Final answer
    x = 170,824.95

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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.