Home / 18,905,858.10-28,372,783.95-12,513,986.10

Finding the Fourth Proportional to 18,905,858.10, 28,372,783.95 and 12,513,986.10

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Solution

The fourth proportional to 18,905,858.10, 28,372,783.95 and 12,513,986.10 is: 18,780,243.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905,858.10 : 28,372,783.95 = 12,513,986.10 : x
  2. Step 2: Convert to fraction form
    18,905,858.10/28,372,783.95 = 12,513,986.10/x
  3. Step 3: Cross multiply
    18,905,858.10x = 28,372,783.95 × 12,513,986.10
  4. Step 4: Simplify right side
    18,905,858.10x = 355,056,623,968,603.06
  5. Step 5: Solve for x
    x = 355,056,623,968,603.06/18,905,858.10
  6. Step 6: Final answer
    x = 18,780,243.78

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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.