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Finding the Fourth Proportional to 51,082.56, 70,492.56 and 28,421.58

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Solution

The fourth proportional to 51,082.56, 70,492.56 and 28,421.58 is: 39,221.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,082.56 : 70,492.56 = 28,421.58 : x
  2. Step 2: Convert to fraction form
    51,082.56/70,492.56 = 28,421.58/x
  3. Step 3: Cross multiply
    51,082.56x = 70,492.56 × 28,421.58
  4. Step 4: Simplify right side
    51,082.56x = 2,003,509,933.44
  5. Step 5: Solve for x
    x = 2,003,509,933.44/51,082.56
  6. Step 6: Final answer
    x = 39,221.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.