Home / 18,927,720.85-28,380,209.91-7,399,457.47

Finding the Fourth Proportional to 18,927,720.85, 28,380,209.91 and 7,399,457.47

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Solution

The fourth proportional to 18,927,720.85, 28,380,209.91 and 7,399,457.47 is: 11,094,740.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927,720.85 : 28,380,209.91 = 7,399,457.47 : x
  2. Step 2: Convert to fraction form
    18,927,720.85/28,380,209.91 = 7,399,457.47/x
  3. Step 3: Cross multiply
    18,927,720.85x = 28,380,209.91 × 7,399,457.47
  4. Step 4: Simplify right side
    18,927,720.85x = 209,998,156,218,717.53
  5. Step 5: Solve for x
    x = 209,998,156,218,717.53/18,927,720.85
  6. Step 6: Final answer
    x = 11,094,740.77

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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.