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Finding the Fourth Proportional to 51,059.62, 70,461.04 and 28,398.54

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Solution

The fourth proportional to 51,059.62, 70,461.04 and 28,398.54 is: 39,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,059.62 : 70,461.04 = 28,398.54 : x
  2. Step 2: Convert to fraction form
    51,059.62/70,461.04 = 28,398.54/x
  3. Step 3: Cross multiply
    51,059.62x = 70,461.04 × 28,398.54
  4. Step 4: Simplify right side
    51,059.62x = 2,000,990,520.89
  5. Step 5: Solve for x
    x = 2,000,990,520.89/51,059.62
  6. Step 6: Final answer
    x = 39,189.30

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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.