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Finding the Fourth Proportional to 71,140.56, 106,710.36 and 29,011.20

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Solution

The fourth proportional to 71,140.56, 106,710.36 and 29,011.20 is: 43,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,140.56 : 106,710.36 = 29,011.20 : x
  2. Step 2: Convert to fraction form
    71,140.56/106,710.36 = 29,011.20/x
  3. Step 3: Cross multiply
    71,140.56x = 106,710.36 × 29,011.20
  4. Step 4: Simplify right side
    71,140.56x = 3,095,795,596.03
  5. Step 5: Solve for x
    x = 3,095,795,596.03/71,140.56
  6. Step 6: Final answer
    x = 43,516.60

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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.