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Finding the Fourth Proportional to 28,235.72, 38,959.02 and 16,296.53

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Solution

The fourth proportional to 28,235.72, 38,959.02 and 16,296.53 is: 22,485.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.72 : 38,959.02 = 16,296.53 : x
  2. Step 2: Convert to fraction form
    28,235.72/38,959.02 = 16,296.53/x
  3. Step 3: Cross multiply
    28,235.72x = 38,959.02 × 16,296.53
  4. Step 4: Simplify right side
    28,235.72x = 634,896,838.20
  5. Step 5: Solve for x
    x = 634,896,838.20/28,235.72
  6. Step 6: Final answer
    x = 22,485.59

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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.