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Finding the Fourth Proportional to 112,861.20, 158,355.60 and 112,861.20

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Solution

The fourth proportional to 112,861.20, 158,355.60 and 112,861.20 is: 158,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,861.20 : 158,355.60 = 112,861.20 : x
  2. Step 2: Convert to fraction form
    112,861.20/158,355.60 = 112,861.20/x
  3. Step 3: Cross multiply
    112,861.20x = 158,355.60 × 112,861.20
  4. Step 4: Simplify right side
    112,861.20x = 17,872,203,042.72
  5. Step 5: Solve for x
    x = 17,872,203,042.72/112,861.20
  6. Step 6: Final answer
    x = 158,355.60

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1.5x scale

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.