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Finding the Fourth Proportional to 71,868,763.60, 107,803,145.40 and 48,910,512.40

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Solution

The fourth proportional to 71,868,763.60, 107,803,145.40 and 48,910,512.40 is: 73,365,768.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,868,763.60 : 107,803,145.40 = 48,910,512.40 : x
  2. Step 2: Convert to fraction form
    71,868,763.60/107,803,145.40 = 48,910,512.40/x
  3. Step 3: Cross multiply
    71,868,763.60x = 107,803,145.40 × 48,910,512.40
  4. Step 4: Simplify right side
    71,868,763.60x = 5,272,707,079,845,703
  5. Step 5: Solve for x
    x = 5,272,707,079,845,703/71,868,763.60
  6. Step 6: Final answer
    x = 73,365,768.60

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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.