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Finding the Fourth Proportional to 69,578.88, 96,023.68 and 39,364.32

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Solution

The fourth proportional to 69,578.88, 96,023.68 and 39,364.32 is: 54,325.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,578.88 : 96,023.68 = 39,364.32 : x
  2. Step 2: Convert to fraction form
    69,578.88/96,023.68 = 39,364.32/x
  3. Step 3: Cross multiply
    69,578.88x = 96,023.68 × 39,364.32
  4. Step 4: Simplify right side
    69,578.88x = 3,779,906,867.10
  5. Step 5: Solve for x
    x = 3,779,906,867.10/69,578.88
  6. Step 6: Final answer
    x = 54,325.49

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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.