Home / 12,919,511.88-17,829,244.53-7,956,075.29

Finding the Fourth Proportional to 12,919,511.88, 17,829,244.53 and 7,956,075.29

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Solution

The fourth proportional to 12,919,511.88, 17,829,244.53 and 7,956,075.29 is: 10,979,579.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919,511.88 : 17,829,244.53 = 7,956,075.29 : x
  2. Step 2: Convert to fraction form
    12,919,511.88/17,829,244.53 = 7,956,075.29/x
  3. Step 3: Cross multiply
    12,919,511.88x = 17,829,244.53 × 7,956,075.29
  4. Step 4: Simplify right side
    12,919,511.88x = 141,850,811,755,354.47
  5. Step 5: Solve for x
    x = 141,850,811,755,354.47/12,919,511.88
  6. Step 6: Final answer
    x = 10,979,579.81

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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.