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Finding the Fourth Proportional to 161,456.71, 242,185.28 and 77,197.08

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Solution

The fourth proportional to 161,456.71, 242,185.28 and 77,197.08 is: 115,795.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,456.71 : 242,185.28 = 77,197.08 : x
  2. Step 2: Convert to fraction form
    161,456.71/242,185.28 = 77,197.08/x
  3. Step 3: Cross multiply
    161,456.71x = 242,185.28 × 77,197.08
  4. Step 4: Simplify right side
    161,456.71x = 18,695,996,434.98
  5. Step 5: Solve for x
    x = 18,695,996,434.98/161,456.71
  6. Step 6: Final answer
    x = 115,795.72

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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.