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Finding the Fourth Proportional to 71,894,553.40, 107,841,830.10 and 67,926,460.60

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Solution

The fourth proportional to 71,894,553.40, 107,841,830.10 and 67,926,460.60 is: 101,889,690.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,894,553.40 : 107,841,830.10 = 67,926,460.60 : x
  2. Step 2: Convert to fraction form
    71,894,553.40/107,841,830.10 = 67,926,460.60/x
  3. Step 3: Cross multiply
    71,894,553.40x = 107,841,830.10 × 67,926,460.60
  4. Step 4: Simplify right side
    71,894,553.40x = 7,325,313,823,319,543
  5. Step 5: Solve for x
    x = 7,325,313,823,319,543/71,894,553.40
  6. Step 6: Final answer
    x = 101,889,690.90

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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.