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Finding the Fourth Proportional to 55,207.80, 82,811.70 and 46,459.80

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Solution

The fourth proportional to 55,207.80, 82,811.70 and 46,459.80 is: 69,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,207.80 : 82,811.70 = 46,459.80 : x
  2. Step 2: Convert to fraction form
    55,207.80/82,811.70 = 46,459.80/x
  3. Step 3: Cross multiply
    55,207.80x = 82,811.70 × 46,459.80
  4. Step 4: Simplify right side
    55,207.80x = 3,847,415,019.66
  5. Step 5: Solve for x
    x = 3,847,415,019.66/55,207.80
  6. Step 6: Final answer
    x = 69,689.70

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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.