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Finding the Fourth Proportional to 69,900.79, 96,459.77 and 39,682.00

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Solution

The fourth proportional to 69,900.79, 96,459.77 and 39,682.00 is: 54,759.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,900.79 : 96,459.77 = 39,682.00 : x
  2. Step 2: Convert to fraction form
    69,900.79/96,459.77 = 39,682.00/x
  3. Step 3: Cross multiply
    69,900.79x = 96,459.77 × 39,682.00
  4. Step 4: Simplify right side
    69,900.79x = 3,827,717,048.37
  5. Step 5: Solve for x
    x = 3,827,717,048.37/69,900.79
  6. Step 6: Final answer
    x = 54,759.28

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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.