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Finding the Fourth Proportional to 12,084,779.86, 16,676,978.88 and 6,578,137.69

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Solution

The fourth proportional to 12,084,779.86, 16,676,978.88 and 6,578,137.69 is: 9,077,820.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084,779.86 : 16,676,978.88 = 6,578,137.69 : x
  2. Step 2: Convert to fraction form
    12,084,779.86/16,676,978.88 = 6,578,137.69/x
  3. Step 3: Cross multiply
    12,084,779.86x = 16,676,978.88 × 6,578,137.69
  4. Step 4: Simplify right side
    12,084,779.86x = 109,703,463,325,862
  5. Step 5: Solve for x
    x = 109,703,463,325,862/12,084,779.86
  6. Step 6: Final answer
    x = 9,077,820.58

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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.