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Finding the Fourth Proportional to 69,800.64, 96,327.40 and 39,998.40

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Solution

The fourth proportional to 69,800.64, 96,327.40 and 39,998.40 is: 55,199.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,800.64 : 96,327.40 = 39,998.40 : x
  2. Step 2: Convert to fraction form
    69,800.64/96,327.40 = 39,998.40/x
  3. Step 3: Cross multiply
    69,800.64x = 96,327.40 × 39,998.40
  4. Step 4: Simplify right side
    69,800.64x = 3,852,941,876.16
  5. Step 5: Solve for x
    x = 3,852,941,876.16/69,800.64
  6. Step 6: Final answer
    x = 55,199.23

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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.