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Finding the Fourth Proportional to 71,695.16, 107,546.98 and 21,776.92

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Solution

The fourth proportional to 71,695.16, 107,546.98 and 21,776.92 is: 32,666.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,695.16 : 107,546.98 = 21,776.92 : x
  2. Step 2: Convert to fraction form
    71,695.16/107,546.98 = 21,776.92/x
  3. Step 3: Cross multiply
    71,695.16x = 107,546.98 × 21,776.92
  4. Step 4: Simplify right side
    71,695.16x = 2,342,041,979.70
  5. Step 5: Solve for x
    x = 2,342,041,979.70/71,695.16
  6. Step 6: Final answer
    x = 32,666.67

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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.