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Finding the Fourth Proportional to 1,945,961.77, 2,917,962.69 and 648,654.84

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Solution

The fourth proportional to 1,945,961.77, 2,917,962.69 and 648,654.84 is: 972,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945,961.77 : 2,917,962.69 = 648,654.84 : x
  2. Step 2: Convert to fraction form
    1,945,961.77/2,917,962.69 = 648,654.84/x
  3. Step 3: Cross multiply
    1,945,961.77x = 2,917,962.69 × 648,654.84
  4. Step 4: Simplify right side
    1,945,961.77x = 1,892,750,621,807.92
  5. Step 5: Solve for x
    x = 1,892,750,621,807.92/1,945,961.77
  6. Step 6: Final answer
    x = 972,655.60

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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.