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Finding the Fourth Proportional to 70,733.92, 106,100.88 and 28,632.64

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Solution

The fourth proportional to 70,733.92, 106,100.88 and 28,632.64 is: 42,948.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,733.92 : 106,100.88 = 28,632.64 : x
  2. Step 2: Convert to fraction form
    70,733.92/106,100.88 = 28,632.64/x
  3. Step 3: Cross multiply
    70,733.92x = 106,100.88 × 28,632.64
  4. Step 4: Simplify right side
    70,733.92x = 3,037,948,300.72
  5. Step 5: Solve for x
    x = 3,037,948,300.72/70,733.92
  6. Step 6: Final answer
    x = 42,948.96

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Similar ratio
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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.