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Finding the Fourth Proportional to 92,316.93, 138,480.87 and 29,139.06

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Solution

The fourth proportional to 92,316.93, 138,480.87 and 29,139.06 is: 43,710.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,316.93 : 138,480.87 = 29,139.06 : x
  2. Step 2: Convert to fraction form
    92,316.93/138,480.87 = 29,139.06/x
  3. Step 3: Cross multiply
    92,316.93x = 138,480.87 × 29,139.06
  4. Step 4: Simplify right side
    92,316.93x = 4,035,202,379.78
  5. Step 5: Solve for x
    x = 4,035,202,379.78/92,316.93
  6. Step 6: Final answer
    x = 43,710.32

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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.