Home / 19,938,346.80-29,907,520.20-12,757,988.40

Finding the Fourth Proportional to 19,938,346.80, 29,907,520.20 and 12,757,988.40

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Solution

The fourth proportional to 19,938,346.80, 29,907,520.20 and 12,757,988.40 is: 19,136,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938,346.80 : 29,907,520.20 = 12,757,988.40 : x
  2. Step 2: Convert to fraction form
    19,938,346.80/29,907,520.20 = 12,757,988.40/x
  3. Step 3: Cross multiply
    19,938,346.80x = 29,907,520.20 × 12,757,988.40
  4. Step 4: Simplify right side
    19,938,346.80x = 381,559,795,784,365.69
  5. Step 5: Solve for x
    x = 381,559,795,784,365.69/19,938,346.80
  6. Step 6: Final answer
    x = 19,136,982.60

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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.