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Finding the Fourth Proportional to 99,553.84, 137,384.28 and 54,841.84

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Solution

The fourth proportional to 99,553.84, 137,384.28 and 54,841.84 is: 75,681.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,553.84 : 137,384.28 = 54,841.84 : x
  2. Step 2: Convert to fraction form
    99,553.84/137,384.28 = 54,841.84/x
  3. Step 3: Cross multiply
    99,553.84x = 137,384.28 × 54,841.84
  4. Step 4: Simplify right side
    99,553.84x = 7,534,406,702.28
  5. Step 5: Solve for x
    x = 7,534,406,702.28/99,553.84
  6. Step 6: Final answer
    x = 75,681.73

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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.