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Finding the Fourth Proportional to 111,112.68, 153,350.64 and 65,787.24

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Solution

The fourth proportional to 111,112.68, 153,350.64 and 65,787.24 is: 90,795.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,112.68 : 153,350.64 = 65,787.24 : x
  2. Step 2: Convert to fraction form
    111,112.68/153,350.64 = 65,787.24/x
  3. Step 3: Cross multiply
    111,112.68x = 153,350.64 × 65,787.24
  4. Step 4: Simplify right side
    111,112.68x = 10,088,515,357.83
  5. Step 5: Solve for x
    x = 10,088,515,357.83/111,112.68
  6. Step 6: Final answer
    x = 90,795.36

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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.