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Finding the Fourth Proportional to 77,511.63, 106,962.59 and 43,519.50

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Solution

The fourth proportional to 77,511.63, 106,962.59 and 43,519.50 is: 60,054.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,511.63 : 106,962.59 = 43,519.50 : x
  2. Step 2: Convert to fraction form
    77,511.63/106,962.59 = 43,519.50/x
  3. Step 3: Cross multiply
    77,511.63x = 106,962.59 × 43,519.50
  4. Step 4: Simplify right side
    77,511.63x = 4,654,958,217.91
  5. Step 5: Solve for x
    x = 4,654,958,217.91/77,511.63
  6. Step 6: Final answer
    x = 60,054.96

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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.