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Finding the Fourth Proportional to 71,776.90, 107,410.20 and 62,518.60

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Solution

The fourth proportional to 71,776.90, 107,410.20 and 62,518.60 is: 93,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,776.90 : 107,410.20 = 62,518.60 : x
  2. Step 2: Convert to fraction form
    71,776.90/107,410.20 = 62,518.60/x
  3. Step 3: Cross multiply
    71,776.90x = 107,410.20 × 62,518.60
  4. Step 4: Simplify right side
    71,776.90x = 6,715,135,329.72
  5. Step 5: Solve for x
    x = 6,715,135,329.72/71,776.90
  6. Step 6: Final answer
    x = 93,555.66

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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.