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Finding the Fourth Proportional to 52,457.70, 72,391.52 and 28,584.55

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Solution

The fourth proportional to 52,457.70, 72,391.52 and 28,584.55 is: 39,446.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,457.70 : 72,391.52 = 28,584.55 : x
  2. Step 2: Convert to fraction form
    52,457.70/72,391.52 = 28,584.55/x
  3. Step 3: Cross multiply
    52,457.70x = 72,391.52 × 28,584.55
  4. Step 4: Simplify right side
    52,457.70x = 2,069,278,777.76
  5. Step 5: Solve for x
    x = 2,069,278,777.76/52,457.70
  6. Step 6: Final answer
    x = 39,446.62

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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.