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Finding the Fourth Proportional to 74,530.76, 102,854.06 and 40,996.76

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Solution

The fourth proportional to 74,530.76, 102,854.06 and 40,996.76 is: 56,576.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,530.76 : 102,854.06 = 40,996.76 : x
  2. Step 2: Convert to fraction form
    74,530.76/102,854.06 = 40,996.76/x
  3. Step 3: Cross multiply
    74,530.76x = 102,854.06 × 40,996.76
  4. Step 4: Simplify right side
    74,530.76x = 4,216,683,212.85
  5. Step 5: Solve for x
    x = 4,216,683,212.85/74,530.76
  6. Step 6: Final answer
    x = 56,576.42

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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.