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Finding the Fourth Proportional to 6,800,907.60, 9,382,878.54 and 3,860,374.32

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Solution

The fourth proportional to 6,800,907.60, 9,382,878.54 and 3,860,374.32 is: 5,325,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,800,907.60 : 9,382,878.54 = 3,860,374.32 : x
  2. Step 2: Convert to fraction form
    6,800,907.60/9,382,878.54 = 3,860,374.32/x
  3. Step 3: Cross multiply
    6,800,907.60x = 9,382,878.54 × 3,860,374.32
  4. Step 4: Simplify right side
    6,800,907.60x = 36,221,423,363,495.09
  5. Step 5: Solve for x
    x = 36,221,423,363,495.09/6,800,907.60
  6. Step 6: Final answer
    x = 5,325,969.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.