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Finding the Fourth Proportional to 1,999,734.40, 3,000,076.80 and 651,905.92

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Solution

The fourth proportional to 1,999,734.40, 3,000,076.80 and 651,905.92 is: 978,013.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999,734.40 : 3,000,076.80 = 651,905.92 : x
  2. Step 2: Convert to fraction form
    1,999,734.40/3,000,076.80 = 651,905.92/x
  3. Step 3: Cross multiply
    1,999,734.40x = 3,000,076.80 × 651,905.92
  4. Step 4: Simplify right side
    1,999,734.40x = 1,955,767,826,374.66
  5. Step 5: Solve for x
    x = 1,955,767,826,374.66/1,999,734.40
  6. Step 6: Final answer
    x = 978,013.79

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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.