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Finding the Fourth Proportional to 94,643.40, 141,965.10 and 28,093.80

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Solution

The fourth proportional to 94,643.40, 141,965.10 and 28,093.80 is: 42,140.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,643.40 : 141,965.10 = 28,093.80 : x
  2. Step 2: Convert to fraction form
    94,643.40/141,965.10 = 28,093.80/x
  3. Step 3: Cross multiply
    94,643.40x = 141,965.10 × 28,093.80
  4. Step 4: Simplify right side
    94,643.40x = 3,988,339,126.38
  5. Step 5: Solve for x
    x = 3,988,339,126.38/94,643.40
  6. Step 6: Final answer
    x = 42,140.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.