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Finding the Fourth Proportional to 28,888.52, 39,866.16 and 16,314.08

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Solution

The fourth proportional to 28,888.52, 39,866.16 and 16,314.08 is: 22,513.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,888.52 : 39,866.16 = 16,314.08 : x
  2. Step 2: Convert to fraction form
    28,888.52/39,866.16 = 16,314.08/x
  3. Step 3: Cross multiply
    28,888.52x = 39,866.16 × 16,314.08
  4. Step 4: Simplify right side
    28,888.52x = 650,379,723.53
  5. Step 5: Solve for x
    x = 650,379,723.53/28,888.52
  6. Step 6: Final answer
    x = 22,513.43

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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.