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Finding the Fourth Proportional to 61,213.80, 84,475.08 and 34,358.88

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Solution

The fourth proportional to 61,213.80, 84,475.08 and 34,358.88 is: 47,415.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,213.80 : 84,475.08 = 34,358.88 : x
  2. Step 2: Convert to fraction form
    61,213.80/84,475.08 = 34,358.88/x
  3. Step 3: Cross multiply
    61,213.80x = 84,475.08 × 34,358.88
  4. Step 4: Simplify right side
    61,213.80x = 2,902,469,136.71
  5. Step 5: Solve for x
    x = 2,902,469,136.71/61,213.80
  6. Step 6: Final answer
    x = 47,415.27

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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.