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Finding the Fourth Proportional to 92,715.42, 138,979.33 and 36,533.68

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Solution

The fourth proportional to 92,715.42, 138,979.33 and 36,533.68 is: 54,763.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,715.42 : 138,979.33 = 36,533.68 : x
  2. Step 2: Convert to fraction form
    92,715.42/138,979.33 = 36,533.68/x
  3. Step 3: Cross multiply
    92,715.42x = 138,979.33 × 36,533.68
  4. Step 4: Simplify right side
    92,715.42x = 5,077,426,368.83
  5. Step 5: Solve for x
    x = 5,077,426,368.83/92,715.42
  6. Step 6: Final answer
    x = 54,763.56

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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.