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Finding the Fourth Proportional to 1,907,985.64, 2,863,290.64 and 786,054.64

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Solution

The fourth proportional to 1,907,985.64, 2,863,290.64 and 786,054.64 is: 1,179,622.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907,985.64 : 2,863,290.64 = 786,054.64 : x
  2. Step 2: Convert to fraction form
    1,907,985.64/2,863,290.64 = 786,054.64/x
  3. Step 3: Cross multiply
    1,907,985.64x = 2,863,290.64 × 786,054.64
  4. Step 4: Simplify right side
    1,907,985.64x = 2,250,702,893,240.57
  5. Step 5: Solve for x
    x = 2,250,702,893,240.57/1,907,985.64
  6. Step 6: Final answer
    x = 1,179,622.55

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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.