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Finding the Fourth Proportional to 330,057.12, 495,111.84 and 93,401.28

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Solution

The fourth proportional to 330,057.12, 495,111.84 and 93,401.28 is: 140,109.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,057.12 : 495,111.84 = 93,401.28 : x
  2. Step 2: Convert to fraction form
    330,057.12/495,111.84 = 93,401.28/x
  3. Step 3: Cross multiply
    330,057.12x = 495,111.84 × 93,401.28
  4. Step 4: Simplify right side
    330,057.12x = 46,244,079,599.16
  5. Step 5: Solve for x
    x = 46,244,079,599.16/330,057.12
  6. Step 6: Final answer
    x = 140,109.32

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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.