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Finding the Fourth Proportional to 92,260, 138,291.60 and 39,673.60

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Solution

The fourth proportional to 92,260, 138,291.60 and 39,673.60 is: 59,468.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,260 : 138,291.60 = 39,673.60 : x
  2. Step 2: Convert to fraction form
    92,260/138,291.60 = 39,673.60/x
  3. Step 3: Cross multiply
    92,260x = 138,291.60 × 39,673.60
  4. Step 4: Simplify right side
    92,260x = 5,486,525,621.76
  5. Step 5: Solve for x
    x = 5,486,525,621.76/92,260
  6. Step 6: Final answer
    x = 59,468.09

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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.