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Finding the Fourth Proportional to 18,844,605.16, 26,008,640.28 and 15,699,881.88

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Solution

The fourth proportional to 18,844,605.16, 26,008,640.28 and 15,699,881.88 is: 21,668,407.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,844,605.16 : 26,008,640.28 = 15,699,881.88 : x
  2. Step 2: Convert to fraction form
    18,844,605.16/26,008,640.28 = 15,699,881.88/x
  3. Step 3: Cross multiply
    18,844,605.16x = 26,008,640.28 × 15,699,881.88
  4. Step 4: Simplify right side
    18,844,605.16x = 408,332,580,255,410.19
  5. Step 5: Solve for x
    x = 408,332,580,255,410.19/18,844,605.16
  6. Step 6: Final answer
    x = 21,668,407.31

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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.