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Finding the Fourth Proportional to 80,851,999.60, 121,277,999.40 and 32,305,848.40

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Solution

The fourth proportional to 80,851,999.60, 121,277,999.40 and 32,305,848.40 is: 48,458,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,851,999.60 : 121,277,999.40 = 32,305,848.40 : x
  2. Step 2: Convert to fraction form
    80,851,999.60/121,277,999.40 = 32,305,848.40/x
  3. Step 3: Cross multiply
    80,851,999.60x = 121,277,999.40 × 32,305,848.40
  4. Step 4: Simplify right side
    80,851,999.60x = 3,917,988,662,871,691
  5. Step 5: Solve for x
    x = 3,917,988,662,871,691/80,851,999.60
  6. Step 6: Final answer
    x = 48,458,772.60

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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.