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Finding the Fourth Proportional to 129,892.40, 194,838.60 and 94,468.40

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Solution

The fourth proportional to 129,892.40, 194,838.60 and 94,468.40 is: 141,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,892.40 : 194,838.60 = 94,468.40 : x
  2. Step 2: Convert to fraction form
    129,892.40/194,838.60 = 94,468.40/x
  3. Step 3: Cross multiply
    129,892.40x = 194,838.60 × 94,468.40
  4. Step 4: Simplify right side
    129,892.40x = 18,406,090,800.24
  5. Step 5: Solve for x
    x = 18,406,090,800.24/129,892.40
  6. Step 6: Final answer
    x = 141,702.60

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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.