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Finding the Fourth Proportional to 71,894,606.40, 107,841,909.60 and 67,926,513.60

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Solution

The fourth proportional to 71,894,606.40, 107,841,909.60 and 67,926,513.60 is: 101,889,770.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,894,606.40 : 107,841,909.60 = 67,926,513.60 : x
  2. Step 2: Convert to fraction form
    71,894,606.40/107,841,909.60 = 67,926,513.60/x
  3. Step 3: Cross multiply
    71,894,606.40x = 107,841,909.60 × 67,926,513.60
  4. Step 4: Simplify right side
    71,894,606.40x = 7,325,324,939,094,370
  5. Step 5: Solve for x
    x = 7,325,324,939,094,370/71,894,606.40
  6. Step 6: Final answer
    x = 101,889,770.40

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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.