Home / 19,508,172.72-29,143,607.60-12,628,701.78

Finding the Fourth Proportional to 19,508,172.72, 29,143,607.60 and 12,628,701.78

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Solution

The fourth proportional to 19,508,172.72, 29,143,607.60 and 12,628,701.78 is: 18,866,243.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,508,172.72 : 29,143,607.60 = 12,628,701.78 : x
  2. Step 2: Convert to fraction form
    19,508,172.72/29,143,607.60 = 12,628,701.78/x
  3. Step 3: Cross multiply
    19,508,172.72x = 29,143,607.60 × 12,628,701.78
  4. Step 4: Simplify right side
    19,508,172.72x = 368,045,929,110,598
  5. Step 5: Solve for x
    x = 368,045,929,110,598/19,508,172.72
  6. Step 6: Final answer
    x = 18,866,243.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.