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Finding the Fourth Proportional to 119,248.47, 178,483.30 and 87,650.17

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Solution

The fourth proportional to 119,248.47, 178,483.30 and 87,650.17 is: 131,189.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,248.47 : 178,483.30 = 87,650.17 : x
  2. Step 2: Convert to fraction form
    119,248.47/178,483.30 = 87,650.17/x
  3. Step 3: Cross multiply
    119,248.47x = 178,483.30 × 87,650.17
  4. Step 4: Simplify right side
    119,248.47x = 15,644,090,921.83
  5. Step 5: Solve for x
    x = 15,644,090,921.83/119,248.47
  6. Step 6: Final answer
    x = 131,189.03

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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.