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Finding the Fourth Proportional to 18,978,187.44, 26,189,934.20 and 10,605,557.06

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Solution

The fourth proportional to 18,978,187.44, 26,189,934.20 and 10,605,557.06 is: 14,635,688.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978,187.44 : 26,189,934.20 = 10,605,557.06 : x
  2. Step 2: Convert to fraction form
    18,978,187.44/26,189,934.20 = 10,605,557.06/x
  3. Step 3: Cross multiply
    18,978,187.44x = 26,189,934.20 × 10,605,557.06
  4. Step 4: Simplify right side
    18,978,187.44x = 277,758,841,371,768
  5. Step 5: Solve for x
    x = 277,758,841,371,768/18,978,187.44
  6. Step 6: Final answer
    x = 14,635,688.59

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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.