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Finding the Fourth Proportional to 28,907.76, 39,882.76 and 17,573.72

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Solution

The fourth proportional to 28,907.76, 39,882.76 and 17,573.72 is: 24,245.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.76 : 39,882.76 = 17,573.72 : x
  2. Step 2: Convert to fraction form
    28,907.76/39,882.76 = 17,573.72/x
  3. Step 3: Cross multiply
    28,907.76x = 39,882.76 × 17,573.72
  4. Step 4: Simplify right side
    28,907.76x = 700,888,457.07
  5. Step 5: Solve for x
    x = 700,888,457.07/28,907.76
  6. Step 6: Final answer
    x = 24,245.69

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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.