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Finding the Fourth Proportional to 28,497.59, 39,326.46 and 15,751.64

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Solution

The fourth proportional to 28,497.59, 39,326.46 and 15,751.64 is: 21,737.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,497.59 : 39,326.46 = 15,751.64 : x
  2. Step 2: Convert to fraction form
    28,497.59/39,326.46 = 15,751.64/x
  3. Step 3: Cross multiply
    28,497.59x = 39,326.46 × 15,751.64
  4. Step 4: Simplify right side
    28,497.59x = 619,456,240.39
  5. Step 5: Solve for x
    x = 619,456,240.39/28,497.59
  6. Step 6: Final answer
    x = 21,737.14

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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.