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Finding the Fourth Proportional to 156,855.69, 216,460.49 and 88,872.53

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Solution

The fourth proportional to 156,855.69, 216,460.49 and 88,872.53 is: 122,643.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,855.69 : 216,460.49 = 88,872.53 : x
  2. Step 2: Convert to fraction form
    156,855.69/216,460.49 = 88,872.53/x
  3. Step 3: Cross multiply
    156,855.69x = 216,460.49 × 88,872.53
  4. Step 4: Simplify right side
    156,855.69x = 19,237,389,864.67
  5. Step 5: Solve for x
    x = 19,237,389,864.67/156,855.69
  6. Step 6: Final answer
    x = 122,643.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.