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Finding the Fourth Proportional to 111,357.92, 153,877.32 and 81,090.32

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Solution

The fourth proportional to 111,357.92, 153,877.32 and 81,090.32 is: 112,052.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,357.92 : 153,877.32 = 81,090.32 : x
  2. Step 2: Convert to fraction form
    111,357.92/153,877.32 = 81,090.32/x
  3. Step 3: Cross multiply
    111,357.92x = 153,877.32 × 81,090.32
  4. Step 4: Simplify right side
    111,357.92x = 12,477,961,119.54
  5. Step 5: Solve for x
    x = 12,477,961,119.54/111,357.92
  6. Step 6: Final answer
    x = 112,052.75

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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.