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Finding the Fourth Proportional to 28,573.61, 42,862.26 and 7,514.16

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Solution

The fourth proportional to 28,573.61, 42,862.26 and 7,514.16 is: 11,271.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,573.61 : 42,862.26 = 7,514.16 : x
  2. Step 2: Convert to fraction form
    28,573.61/42,862.26 = 7,514.16/x
  3. Step 3: Cross multiply
    28,573.61x = 42,862.26 × 7,514.16
  4. Step 4: Simplify right side
    28,573.61x = 322,073,842.03
  5. Step 5: Solve for x
    x = 322,073,842.03/28,573.61
  6. Step 6: Final answer
    x = 11,271.73

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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.