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Finding the Fourth Proportional to 111,937.92, 154,485.22 and 83,594.40

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Solution

The fourth proportional to 111,937.92, 154,485.22 and 83,594.40 is: 115,368.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,937.92 : 154,485.22 = 83,594.40 : x
  2. Step 2: Convert to fraction form
    111,937.92/154,485.22 = 83,594.40/x
  3. Step 3: Cross multiply
    111,937.92x = 154,485.22 × 83,594.40
  4. Step 4: Simplify right side
    111,937.92x = 12,914,099,274.77
  5. Step 5: Solve for x
    x = 12,914,099,274.77/111,937.92
  6. Step 6: Final answer
    x = 115,368.40

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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.