Home / 18,970,581.61-28,453,957.36-12,861,786.69

Finding the Fourth Proportional to 18,970,581.61, 28,453,957.36 and 12,861,786.69

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Solution

The fourth proportional to 18,970,581.61, 28,453,957.36 and 12,861,786.69 is: 19,291,381.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970,581.61 : 28,453,957.36 = 12,861,786.69 : x
  2. Step 2: Convert to fraction form
    18,970,581.61/28,453,957.36 = 12,861,786.69/x
  3. Step 3: Cross multiply
    18,970,581.61x = 28,453,957.36 × 12,861,786.69
  4. Step 4: Simplify right side
    18,970,581.61x = 365,968,730,050,675.50
  5. Step 5: Solve for x
    x = 365,968,730,050,675.50/18,970,581.61
  6. Step 6: Final answer
    x = 19,291,381.65

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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.