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Finding the Fourth Proportional to 18,919,710.72, 26,109,194.32 and 10,217,885.20

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Solution

The fourth proportional to 18,919,710.72, 26,109,194.32 and 10,217,885.20 is: 14,100,678.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919,710.72 : 26,109,194.32 = 10,217,885.20 : x
  2. Step 2: Convert to fraction form
    18,919,710.72/26,109,194.32 = 10,217,885.20/x
  3. Step 3: Cross multiply
    18,919,710.72x = 26,109,194.32 × 10,217,885.20
  4. Step 4: Simplify right side
    18,919,710.72x = 266,780,750,226,252.06
  5. Step 5: Solve for x
    x = 266,780,750,226,252.06/18,919,710.72
  6. Step 6: Final answer
    x = 14,100,678.08

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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.