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Finding the Fourth Proportional to 74,459.56, 102,754.74 and 40,468.18

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Solution

The fourth proportional to 74,459.56, 102,754.74 and 40,468.18 is: 55,846.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,459.56 : 102,754.74 = 40,468.18 : x
  2. Step 2: Convert to fraction form
    74,459.56/102,754.74 = 40,468.18/x
  3. Step 3: Cross multiply
    74,459.56x = 102,754.74 × 40,468.18
  4. Step 4: Simplify right side
    74,459.56x = 4,158,297,314.17
  5. Step 5: Solve for x
    x = 4,158,297,314.17/74,459.56
  6. Step 6: Final answer
    x = 55,846.39

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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.