Home / 30,519,876.50-42,107,013.12-18,913,205.06

Finding the Fourth Proportional to 30,519,876.50, 42,107,013.12 and 18,913,205.06

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Solution

The fourth proportional to 30,519,876.50, 42,107,013.12 and 18,913,205.06 is: 26,093,767.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519,876.50 : 42,107,013.12 = 18,913,205.06 : x
  2. Step 2: Convert to fraction form
    30,519,876.50/42,107,013.12 = 18,913,205.06/x
  3. Step 3: Cross multiply
    30,519,876.50x = 42,107,013.12 × 18,913,205.06
  4. Step 4: Simplify right side
    30,519,876.50x = 796,378,573,602,670.25
  5. Step 5: Solve for x
    x = 796,378,573,602,670.25/30,519,876.50
  6. Step 6: Final answer
    x = 26,093,767.90

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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.