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Finding the Fourth Proportional to 92,715.20, 138,975.60 and 36,533.60

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Solution

The fourth proportional to 92,715.20, 138,975.60 and 36,533.60 is: 54,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,715.20 : 138,975.60 = 36,533.60 : x
  2. Step 2: Convert to fraction form
    92,715.20/138,975.60 = 36,533.60/x
  3. Step 3: Cross multiply
    92,715.20x = 138,975.60 × 36,533.60
  4. Step 4: Simplify right side
    92,715.20x = 5,077,278,980.16
  5. Step 5: Solve for x
    x = 5,077,278,980.16/92,715.20
  6. Step 6: Final answer
    x = 54,762.10

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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.