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Finding the Fourth Proportional to 23,602.78, 32,560.94 and 15,221.98

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Solution

The fourth proportional to 23,602.78, 32,560.94 and 15,221.98 is: 20,999.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,602.78 : 32,560.94 = 15,221.98 : x
  2. Step 2: Convert to fraction form
    23,602.78/32,560.94 = 15,221.98/x
  3. Step 3: Cross multiply
    23,602.78x = 32,560.94 × 15,221.98
  4. Step 4: Simplify right side
    23,602.78x = 495,641,977.46
  5. Step 5: Solve for x
    x = 495,641,977.46/23,602.78
  6. Step 6: Final answer
    x = 20,999.31

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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.