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Finding the Fourth Proportional to 130,995.48, 180,773.73 and 71,379.48

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Solution

The fourth proportional to 130,995.48, 180,773.73 and 71,379.48 is: 98,503.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,995.48 : 180,773.73 = 71,379.48 : x
  2. Step 2: Convert to fraction form
    130,995.48/180,773.73 = 71,379.48/x
  3. Step 3: Cross multiply
    130,995.48x = 180,773.73 × 71,379.48
  4. Step 4: Simplify right side
    130,995.48x = 12,903,534,845.06
  5. Step 5: Solve for x
    x = 12,903,534,845.06/130,995.48
  6. Step 6: Final answer
    x = 98,503.66

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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.