Home / 18,683,481.79-28,036,290.53-7,900,191.55

Finding the Fourth Proportional to 18,683,481.79, 28,036,290.53 and 7,900,191.55

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Solution

The fourth proportional to 18,683,481.79, 28,036,290.53 and 7,900,191.55 is: 11,854,967.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683,481.79 : 28,036,290.53 = 7,900,191.55 : x
  2. Step 2: Convert to fraction form
    18,683,481.79/28,036,290.53 = 7,900,191.55/x
  3. Step 3: Cross multiply
    18,683,481.79x = 28,036,290.53 × 7,900,191.55
  4. Step 4: Simplify right side
    18,683,481.79x = 221,492,065,538,451.03
  5. Step 5: Solve for x
    x = 221,492,065,538,451.03/18,683,481.79
  6. Step 6: Final answer
    x = 11,854,967.29

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Double scale
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1.5x scale

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.