Home / 18,886,656.70-28,329,985.05-12,084,211.90

Finding the Fourth Proportional to 18,886,656.70, 28,329,985.05 and 12,084,211.90

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Solution

The fourth proportional to 18,886,656.70, 28,329,985.05 and 12,084,211.90 is: 18,126,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886,656.70 : 28,329,985.05 = 12,084,211.90 : x
  2. Step 2: Convert to fraction form
    18,886,656.70/28,329,985.05 = 12,084,211.90/x
  3. Step 3: Cross multiply
    18,886,656.70x = 28,329,985.05 × 12,084,211.90
  4. Step 4: Simplify right side
    18,886,656.70x = 342,345,542,468,032.12
  5. Step 5: Solve for x
    x = 342,345,542,468,032.12/18,886,656.70
  6. Step 6: Final answer
    x = 18,126,317.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.