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Finding the Fourth Proportional to 28,153.65, 38,866.11 and 16,214.69

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Solution

The fourth proportional to 28,153.65, 38,866.11 and 16,214.69 is: 22,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153.65 : 38,866.11 = 16,214.69 : x
  2. Step 2: Convert to fraction form
    28,153.65/38,866.11 = 16,214.69/x
  3. Step 3: Cross multiply
    28,153.65x = 38,866.11 × 16,214.69
  4. Step 4: Simplify right side
    28,153.65x = 630,201,670.02
  5. Step 5: Solve for x
    x = 630,201,670.02/28,153.65
  6. Step 6: Final answer
    x = 22,384.37

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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.