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Finding the Fourth Proportional to 1,905,859.45, 2,859,904.55 and 708,608.17

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Solution

The fourth proportional to 1,905,859.45, 2,859,904.55 and 708,608.17 is: 1,063,326.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905,859.45 : 2,859,904.55 = 708,608.17 : x
  2. Step 2: Convert to fraction form
    1,905,859.45/2,859,904.55 = 708,608.17/x
  3. Step 3: Cross multiply
    1,905,859.45x = 2,859,904.55 × 708,608.17
  4. Step 4: Simplify right side
    1,905,859.45x = 2,026,551,729,550.17
  5. Step 5: Solve for x
    x = 2,026,551,729,550.17/1,905,859.45
  6. Step 6: Final answer
    x = 1,063,326.96

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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.