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Finding the Fourth Proportional to 70,240.56, 105,443.16 and 55,459.44

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Solution

The fourth proportional to 70,240.56, 105,443.16 and 55,459.44 is: 83,254.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,240.56 : 105,443.16 = 55,459.44 : x
  2. Step 2: Convert to fraction form
    70,240.56/105,443.16 = 55,459.44/x
  3. Step 3: Cross multiply
    70,240.56x = 105,443.16 × 55,459.44
  4. Step 4: Simplify right side
    70,240.56x = 5,847,818,605.43
  5. Step 5: Solve for x
    x = 5,847,818,605.43/70,240.56
  6. Step 6: Final answer
    x = 83,254.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.