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Finding the Fourth Proportional to 92,336.85, 138,510.40 and 29,158.47

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Solution

The fourth proportional to 92,336.85, 138,510.40 and 29,158.47 is: 43,739.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,336.85 : 138,510.40 = 29,158.47 : x
  2. Step 2: Convert to fraction form
    92,336.85/138,510.40 = 29,158.47/x
  3. Step 3: Cross multiply
    92,336.85x = 138,510.40 × 29,158.47
  4. Step 4: Simplify right side
    92,336.85x = 4,038,750,577.64
  5. Step 5: Solve for x
    x = 4,038,750,577.64/92,336.85
  6. Step 6: Final answer
    x = 43,739.32

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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.