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Finding the Fourth Proportional to 94,702.40, 142,207.20 and 68,590.40

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Solution

The fourth proportional to 94,702.40, 142,207.20 and 68,590.40 is: 102,996.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,702.40 : 142,207.20 = 68,590.40 : x
  2. Step 2: Convert to fraction form
    94,702.40/142,207.20 = 68,590.40/x
  3. Step 3: Cross multiply
    94,702.40x = 142,207.20 × 68,590.40
  4. Step 4: Simplify right side
    94,702.40x = 9,754,048,730.88
  5. Step 5: Solve for x
    x = 9,754,048,730.88/94,702.40
  6. Step 6: Final answer
    x = 102,996.85

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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.