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Finding the Fourth Proportional to 76,665.21, 105,813.72 and 44,841.93

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Solution

The fourth proportional to 76,665.21, 105,813.72 and 44,841.93 is: 61,891.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,665.21 : 105,813.72 = 44,841.93 : x
  2. Step 2: Convert to fraction form
    76,665.21/105,813.72 = 44,841.93/x
  3. Step 3: Cross multiply
    76,665.21x = 105,813.72 × 44,841.93
  4. Step 4: Simplify right side
    76,665.21x = 4,744,891,425.28
  5. Step 5: Solve for x
    x = 4,744,891,425.28/76,665.21
  6. Step 6: Final answer
    x = 61,891.06

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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.