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Finding the Fourth Proportional to 92,616.32, 138,941.76 and 30,290.24

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Solution

The fourth proportional to 92,616.32, 138,941.76 and 30,290.24 is: 45,441.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,616.32 : 138,941.76 = 30,290.24 : x
  2. Step 2: Convert to fraction form
    92,616.32/138,941.76 = 30,290.24/x
  3. Step 3: Cross multiply
    92,616.32x = 138,941.76 × 30,290.24
  4. Step 4: Simplify right side
    92,616.32x = 4,208,579,256.42
  5. Step 5: Solve for x
    x = 4,208,579,256.42/92,616.32
  6. Step 6: Final answer
    x = 45,441.01

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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.