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Finding the Fourth Proportional to 125,911,751.64, 173,758,906.55 and 73,019,819.01

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Solution

The fourth proportional to 125,911,751.64, 173,758,906.55 and 73,019,819.01 is: 100,767,749.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,911,751.64 : 173,758,906.55 = 73,019,819.01 : x
  2. Step 2: Convert to fraction form
    125,911,751.64/173,758,906.55 = 73,019,819.01/x
  3. Step 3: Cross multiply
    125,911,751.64x = 173,758,906.55 × 73,019,819.01
  4. Step 4: Simplify right side
    125,911,751.64x = 12,687,843,907,449,972
  5. Step 5: Solve for x
    x = 12,687,843,907,449,972/125,911,751.64
  6. Step 6: Final answer
    x = 100,767,749.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.