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Finding the Fourth Proportional to 76,640,906.90, 105,748,663.12 and 44,039,560.34

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Solution

The fourth proportional to 76,640,906.90, 105,748,663.12 and 44,039,560.34 is: 60,765,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,640,906.90 : 105,748,663.12 = 44,039,560.34 : x
  2. Step 2: Convert to fraction form
    76,640,906.90/105,748,663.12 = 44,039,560.34/x
  3. Step 3: Cross multiply
    76,640,906.90x = 105,748,663.12 × 44,039,560.34
  4. Step 4: Simplify right side
    76,640,906.90x = 4,657,124,630,347,573
  5. Step 5: Solve for x
    x = 4,657,124,630,347,573/76,640,906.90
  6. Step 6: Final answer
    x = 60,765,520.90

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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.