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Finding the Fourth Proportional to 92,666.16, 138,938.49 and 36,513.72

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Solution

The fourth proportional to 92,666.16, 138,938.49 and 36,513.72 is: 54,746.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,666.16 : 138,938.49 = 36,513.72 : x
  2. Step 2: Convert to fraction form
    92,666.16/138,938.49 = 36,513.72/x
  3. Step 3: Cross multiply
    92,666.16x = 138,938.49 × 36,513.72
  4. Step 4: Simplify right side
    92,666.16x = 5,073,161,121.08
  5. Step 5: Solve for x
    x = 5,073,161,121.08/92,666.16
  6. Step 6: Final answer
    x = 54,746.64

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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.