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Finding the Fourth Proportional to 2,653,728.90, 3,976,510.95 and 1,976,633.70

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Solution

The fourth proportional to 2,653,728.90, 3,976,510.95 and 1,976,633.70 is: 2,961,909.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653,728.90 : 3,976,510.95 = 1,976,633.70 : x
  2. Step 2: Convert to fraction form
    2,653,728.90/3,976,510.95 = 1,976,633.70/x
  3. Step 3: Cross multiply
    2,653,728.90x = 3,976,510.95 × 1,976,633.70
  4. Step 4: Simplify right side
    2,653,728.90x = 7,860,105,552,189.02
  5. Step 5: Solve for x
    x = 7,860,105,552,189.02/2,653,728.90
  6. Step 6: Final answer
    x = 2,961,909.77

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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.