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Finding the Fourth Proportional to 30,959.98, 42,723.45 and 17,531.98

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Solution

The fourth proportional to 30,959.98, 42,723.45 and 17,531.98 is: 24,193.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,959.98 : 42,723.45 = 17,531.98 : x
  2. Step 2: Convert to fraction form
    30,959.98/42,723.45 = 17,531.98/x
  3. Step 3: Cross multiply
    30,959.98x = 42,723.45 × 17,531.98
  4. Step 4: Simplify right side
    30,959.98x = 749,026,564.12
  5. Step 5: Solve for x
    x = 749,026,564.12/30,959.98
  6. Step 6: Final answer
    x = 24,193.38

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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.