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Finding the Fourth Proportional to 72,310.96, 99,825.36 and 45,468.24

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Solution

The fourth proportional to 72,310.96, 99,825.36 and 45,468.24 is: 62,768.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,310.96 : 99,825.36 = 45,468.24 : x
  2. Step 2: Convert to fraction form
    72,310.96/99,825.36 = 45,468.24/x
  3. Step 3: Cross multiply
    72,310.96x = 99,825.36 × 45,468.24
  4. Step 4: Simplify right side
    72,310.96x = 4,538,883,426.57
  5. Step 5: Solve for x
    x = 4,538,883,426.57/72,310.96
  6. Step 6: Final answer
    x = 62,768.96

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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.