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Finding the Fourth Proportional to 111,990.40, 154,535.54 and 68,963.00

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Solution

The fourth proportional to 111,990.40, 154,535.54 and 68,963.00 is: 95,162.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,990.40 : 154,535.54 = 68,963.00 : x
  2. Step 2: Convert to fraction form
    111,990.40/154,535.54 = 68,963.00/x
  3. Step 3: Cross multiply
    111,990.40x = 154,535.54 × 68,963.00
  4. Step 4: Simplify right side
    111,990.40x = 10,657,233,327.53
  5. Step 5: Solve for x
    x = 10,657,233,327.53/111,990.40
  6. Step 6: Final answer
    x = 95,162.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.