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Finding the Fourth Proportional to 30,552.63, 42,163.80 and 17,124.15

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Solution

The fourth proportional to 30,552.63, 42,163.80 and 17,124.15 is: 23,631.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,552.63 : 42,163.80 = 17,124.15 : x
  2. Step 2: Convert to fraction form
    30,552.63/42,163.80 = 17,124.15/x
  3. Step 3: Cross multiply
    30,552.63x = 42,163.80 × 17,124.15
  4. Step 4: Simplify right side
    30,552.63x = 722,019,235.77
  5. Step 5: Solve for x
    x = 722,019,235.77/30,552.63
  6. Step 6: Final answer
    x = 23,631.98

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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.