Home / 18,722,593.80-28,083,890.70-7,938,059.40

Finding the Fourth Proportional to 18,722,593.80, 28,083,890.70 and 7,938,059.40

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Solution

The fourth proportional to 18,722,593.80, 28,083,890.70 and 7,938,059.40 is: 11,907,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,593.80 : 28,083,890.70 = 7,938,059.40 : x
  2. Step 2: Convert to fraction form
    18,722,593.80/28,083,890.70 = 7,938,059.40/x
  3. Step 3: Cross multiply
    18,722,593.80x = 28,083,890.70 × 7,938,059.40
  4. Step 4: Simplify right side
    18,722,593.80x = 222,931,592,559,707.59
  5. Step 5: Solve for x
    x = 222,931,592,559,707.59/18,722,593.80
  6. Step 6: Final answer
    x = 11,907,089.10

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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.