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Finding the Fourth Proportional to 69,904.97, 96,471.57 and 39,693.09

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Solution

The fourth proportional to 69,904.97, 96,471.57 and 39,693.09 is: 54,778.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,904.97 : 96,471.57 = 39,693.09 : x
  2. Step 2: Convert to fraction form
    69,904.97/96,471.57 = 39,693.09/x
  3. Step 3: Cross multiply
    69,904.97x = 96,471.57 × 39,693.09
  4. Step 4: Simplify right side
    69,904.97x = 3,829,254,710.45
  5. Step 5: Solve for x
    x = 3,829,254,710.45/69,904.97
  6. Step 6: Final answer
    x = 54,778.00

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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.