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Finding the Fourth Proportional to 72,626.55, 108,924.75 and 28,252.32

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Solution

The fourth proportional to 72,626.55, 108,924.75 and 28,252.32 is: 42,372.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,626.55 : 108,924.75 = 28,252.32 : x
  2. Step 2: Convert to fraction form
    72,626.55/108,924.75 = 28,252.32/x
  3. Step 3: Cross multiply
    72,626.55x = 108,924.75 × 28,252.32
  4. Step 4: Simplify right side
    72,626.55x = 3,077,376,892.92
  5. Step 5: Solve for x
    x = 3,077,376,892.92/72,626.55
  6. Step 6: Final answer
    x = 42,372.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.