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Finding the Fourth Proportional to 55,700.85, 76,860.07 and 31,829.07

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Solution

The fourth proportional to 55,700.85, 76,860.07 and 31,829.07 is: 43,920.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,700.85 : 76,860.07 = 31,829.07 : x
  2. Step 2: Convert to fraction form
    55,700.85/76,860.07 = 31,829.07/x
  3. Step 3: Cross multiply
    55,700.85x = 76,860.07 × 31,829.07
  4. Step 4: Simplify right side
    55,700.85x = 2,446,384,548.23
  5. Step 5: Solve for x
    x = 2,446,384,548.23/55,700.85
  6. Step 6: Final answer
    x = 43,920.06

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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.