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Finding the Fourth Proportional to 101,484.90, 140,105.46 and 61,208.82

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Solution

The fourth proportional to 101,484.90, 140,105.46 and 61,208.82 is: 84,502.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,484.90 : 140,105.46 = 61,208.82 : x
  2. Step 2: Convert to fraction form
    101,484.90/140,105.46 = 61,208.82/x
  3. Step 3: Cross multiply
    101,484.90x = 140,105.46 × 61,208.82
  4. Step 4: Simplify right side
    101,484.90x = 8,575,689,882.16
  5. Step 5: Solve for x
    x = 8,575,689,882.16/101,484.90
  6. Step 6: Final answer
    x = 84,502.13

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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.