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Finding the Fourth Proportional to 28,691.88, 39,598.50 and 16,116.63

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Solution

The fourth proportional to 28,691.88, 39,598.50 and 16,116.63 is: 22,243.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.88 : 39,598.50 = 16,116.63 : x
  2. Step 2: Convert to fraction form
    28,691.88/39,598.50 = 16,116.63/x
  3. Step 3: Cross multiply
    28,691.88x = 39,598.50 × 16,116.63
  4. Step 4: Simplify right side
    28,691.88x = 638,194,373.06
  5. Step 5: Solve for x
    x = 638,194,373.06/28,691.88
  6. Step 6: Final answer
    x = 22,243.03

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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.