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Finding the Fourth Proportional to 74,658.45, 103,028.64 and 41,124.45

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Solution

The fourth proportional to 74,658.45, 103,028.64 and 41,124.45 is: 56,751.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,658.45 : 103,028.64 = 41,124.45 : x
  2. Step 2: Convert to fraction form
    74,658.45/103,028.64 = 41,124.45/x
  3. Step 3: Cross multiply
    74,658.45x = 103,028.64 × 41,124.45
  4. Step 4: Simplify right side
    74,658.45x = 4,236,996,154.25
  5. Step 5: Solve for x
    x = 4,236,996,154.25/74,658.45
  6. Step 6: Final answer
    x = 56,751.73

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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.