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Finding the Fourth Proportional to 112,000.80, 168,001.20 and 99,753.60

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Solution

The fourth proportional to 112,000.80, 168,001.20 and 99,753.60 is: 149,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,000.80 : 168,001.20 = 99,753.60 : x
  2. Step 2: Convert to fraction form
    112,000.80/168,001.20 = 99,753.60/x
  3. Step 3: Cross multiply
    112,000.80x = 168,001.20 × 99,753.60
  4. Step 4: Simplify right side
    112,000.80x = 16,758,724,504.32
  5. Step 5: Solve for x
    x = 16,758,724,504.32/112,000.80
  6. Step 6: Final answer
    x = 149,630.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.