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Finding the Fourth Proportional to 18,695,422.62, 25,803,987.88 and 10,962,956.07

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Solution

The fourth proportional to 18,695,422.62, 25,803,987.88 and 10,962,956.07 is: 15,131,403.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695,422.62 : 25,803,987.88 = 10,962,956.07 : x
  2. Step 2: Convert to fraction form
    18,695,422.62/25,803,987.88 = 10,962,956.07/x
  3. Step 3: Cross multiply
    18,695,422.62x = 25,803,987.88 × 10,962,956.07
  4. Step 4: Simplify right side
    18,695,422.62x = 282,887,985,474,398.12
  5. Step 5: Solve for x
    x = 282,887,985,474,398.12/18,695,422.62
  6. Step 6: Final answer
    x = 15,131,403.62

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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.