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Finding the Fourth Proportional to 38,313.52, 52,907.52 and 28,865.68

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Solution

The fourth proportional to 38,313.52, 52,907.52 and 28,865.68 is: 39,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,313.52 : 52,907.52 = 28,865.68 : x
  2. Step 2: Convert to fraction form
    38,313.52/52,907.52 = 28,865.68/x
  3. Step 3: Cross multiply
    38,313.52x = 52,907.52 × 28,865.68
  4. Step 4: Simplify right side
    38,313.52x = 1,527,211,541.91
  5. Step 5: Solve for x
    x = 1,527,211,541.91/38,313.52
  6. Step 6: Final answer
    x = 39,860.90

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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.