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Finding the Fourth Proportional to 18,973,211.10, 28,471,151.26 and 17,429,568.72

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Solution

The fourth proportional to 18,973,211.10, 28,471,151.26 and 17,429,568.72 is: 26,154,765.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973,211.10 : 28,471,151.26 = 17,429,568.72 : x
  2. Step 2: Convert to fraction form
    18,973,211.10/28,471,151.26 = 17,429,568.72/x
  3. Step 3: Cross multiply
    18,973,211.10x = 28,471,151.26 × 17,429,568.72
  4. Step 4: Simplify right side
    18,973,211.10x = 496,239,887,423,684.56
  5. Step 5: Solve for x
    x = 496,239,887,423,684.56/18,973,211.10
  6. Step 6: Final answer
    x = 26,154,765.52

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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.