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Finding the Fourth Proportional to 15,789,781.80, 23,684,672.70 and 15,789,781.80

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Solution

The fourth proportional to 15,789,781.80, 23,684,672.70 and 15,789,781.80 is: 23,684,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,789,781.80 : 23,684,672.70 = 15,789,781.80 : x
  2. Step 2: Convert to fraction form
    15,789,781.80/23,684,672.70 = 15,789,781.80/x
  3. Step 3: Cross multiply
    15,789,781.80x = 23,684,672.70 × 15,789,781.80
  4. Step 4: Simplify right side
    15,789,781.80x = 373,975,813,937,416.88
  5. Step 5: Solve for x
    x = 373,975,813,937,416.88/15,789,781.80
  6. Step 6: Final answer
    x = 23,684,672.70

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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.