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Finding the Fourth Proportional to 77,239.88, 106,576.92 and 43,248.90

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Solution

The fourth proportional to 77,239.88, 106,576.92 and 43,248.90 is: 59,675.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,239.88 : 106,576.92 = 43,248.90 : x
  2. Step 2: Convert to fraction form
    77,239.88/106,576.92 = 43,248.90/x
  3. Step 3: Cross multiply
    77,239.88x = 106,576.92 × 43,248.90
  4. Step 4: Simplify right side
    77,239.88x = 4,609,334,555.39
  5. Step 5: Solve for x
    x = 4,609,334,555.39/77,239.88
  6. Step 6: Final answer
    x = 59,675.58

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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.