Home / 18,867,589.80-28,272,516.03-12,696,719.28

Finding the Fourth Proportional to 18,867,589.80, 28,272,516.03 and 12,696,719.28

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Solution

The fourth proportional to 18,867,589.80, 28,272,516.03 and 12,696,719.28 is: 19,025,652.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867,589.80 : 28,272,516.03 = 12,696,719.28 : x
  2. Step 2: Convert to fraction form
    18,867,589.80/28,272,516.03 = 12,696,719.28/x
  3. Step 3: Cross multiply
    18,867,589.80x = 28,272,516.03 × 12,696,719.28
  4. Step 4: Simplify right side
    18,867,589.80x = 358,968,199,372,210.06
  5. Step 5: Solve for x
    x = 358,968,199,372,210.06/18,867,589.80
  6. Step 6: Final answer
    x = 19,025,652.09

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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.