Home / 18,717,769.10-28,076,653.65-13,238,021.90

Finding the Fourth Proportional to 18,717,769.10, 28,076,653.65 and 13,238,021.90

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Solution

The fourth proportional to 18,717,769.10, 28,076,653.65 and 13,238,021.90 is: 19,857,032.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717,769.10 : 28,076,653.65 = 13,238,021.90 : x
  2. Step 2: Convert to fraction form
    18,717,769.10/28,076,653.65 = 13,238,021.90/x
  3. Step 3: Cross multiply
    18,717,769.10x = 28,076,653.65 × 13,238,021.90
  4. Step 4: Simplify right side
    18,717,769.10x = 371,679,355,897,414.94
  5. Step 5: Solve for x
    x = 371,679,355,897,414.94/18,717,769.10
  6. Step 6: Final answer
    x = 19,857,032.85

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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.