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Finding the Fourth Proportional to 19,235.72, 28,853.58 and 10,487.72

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Solution

The fourth proportional to 19,235.72, 28,853.58 and 10,487.72 is: 15,731.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,235.72 : 28,853.58 = 10,487.72 : x
  2. Step 2: Convert to fraction form
    19,235.72/28,853.58 = 10,487.72/x
  3. Step 3: Cross multiply
    19,235.72x = 28,853.58 × 10,487.72
  4. Step 4: Simplify right side
    19,235.72x = 302,608,268.04
  5. Step 5: Solve for x
    x = 302,608,268.04/19,235.72
  6. Step 6: Final answer
    x = 15,731.58

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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.