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Finding the Fourth Proportional to 254,657,700.53, 381,986,073.96 and 79,794,121.11

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Solution

The fourth proportional to 254,657,700.53, 381,986,073.96 and 79,794,121.11 is: 119,691,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,657,700.53 : 381,986,073.96 = 79,794,121.11 : x
  2. Step 2: Convert to fraction form
    254,657,700.53/381,986,073.96 = 79,794,121.11/x
  3. Step 3: Cross multiply
    254,657,700.53x = 381,986,073.96 × 79,794,121.11
  4. Step 4: Simplify right side
    254,657,700.53x = 30,480,243,046,165,984
  5. Step 5: Solve for x
    x = 30,480,243,046,165,984/254,657,700.53
  6. Step 6: Final answer
    x = 119,691,032.25

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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.