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Finding the Fourth Proportional to 95,130.61, 131,368.49 and 71,215.77

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Solution

The fourth proportional to 95,130.61, 131,368.49 and 71,215.77 is: 98,343.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,130.61 : 131,368.49 = 71,215.77 : x
  2. Step 2: Convert to fraction form
    95,130.61/131,368.49 = 71,215.77/x
  3. Step 3: Cross multiply
    95,130.61x = 131,368.49 × 71,215.77
  4. Step 4: Simplify right side
    95,130.61x = 9,355,508,234.34
  5. Step 5: Solve for x
    x = 9,355,508,234.34/95,130.61
  6. Step 6: Final answer
    x = 98,343.82

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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.