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Finding the Fourth Proportional to 71,179,640.40, 106,769,460.60 and 48,336,862.80

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Solution

The fourth proportional to 71,179,640.40, 106,769,460.60 and 48,336,862.80 is: 72,505,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,179,640.40 : 106,769,460.60 = 48,336,862.80 : x
  2. Step 2: Convert to fraction form
    71,179,640.40/106,769,460.60 = 48,336,862.80/x
  3. Step 3: Cross multiply
    71,179,640.40x = 106,769,460.60 × 48,336,862.80
  4. Step 4: Simplify right side
    71,179,640.40x = 5,160,900,768,252,205
  5. Step 5: Solve for x
    x = 5,160,900,768,252,205/71,179,640.40
  6. Step 6: Final answer
    x = 72,505,294.20

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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.