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Finding the Fourth Proportional to 71,808.60, 99,109.62 and 47,566.92

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Solution

The fourth proportional to 71,808.60, 99,109.62 and 47,566.92 is: 65,651.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,808.60 : 99,109.62 = 47,566.92 : x
  2. Step 2: Convert to fraction form
    71,808.60/99,109.62 = 47,566.92/x
  3. Step 3: Cross multiply
    71,808.60x = 99,109.62 × 47,566.92
  4. Step 4: Simplify right side
    71,808.60x = 4,714,339,365.77
  5. Step 5: Solve for x
    x = 4,714,339,365.77/71,808.60
  6. Step 6: Final answer
    x = 65,651.46

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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.