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Finding the Fourth Proportional to 112,052.40, 156,990 and 112,052.40

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Solution

The fourth proportional to 112,052.40, 156,990 and 112,052.40 is: 156,990

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,052.40 : 156,990 = 112,052.40 : x
  2. Step 2: Convert to fraction form
    112,052.40/156,990 = 112,052.40/x
  3. Step 3: Cross multiply
    112,052.40x = 156,990 × 112,052.40
  4. Step 4: Simplify right side
    112,052.40x = 17,591,106,276
  5. Step 5: Solve for x
    x = 17,591,106,276/112,052.40
  6. Step 6: Final answer
    x = 156,990

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.