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Finding the Fourth Proportional to 90,603.36, 125,023.50 and 52,899.48

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Solution

The fourth proportional to 90,603.36, 125,023.50 and 52,899.48 is: 72,995.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,603.36 : 125,023.50 = 52,899.48 : x
  2. Step 2: Convert to fraction form
    90,603.36/125,023.50 = 52,899.48/x
  3. Step 3: Cross multiply
    90,603.36x = 125,023.50 × 52,899.48
  4. Step 4: Simplify right side
    90,603.36x = 6,613,678,137.78
  5. Step 5: Solve for x
    x = 6,613,678,137.78/90,603.36
  6. Step 6: Final answer
    x = 72,995.95

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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.