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Finding the Fourth Proportional to 330,397.80, 495,615.54 and 93,721.92

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Solution

The fourth proportional to 330,397.80, 495,615.54 and 93,721.92 is: 140,588.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,397.80 : 495,615.54 = 93,721.92 : x
  2. Step 2: Convert to fraction form
    330,397.80/495,615.54 = 93,721.92/x
  3. Step 3: Cross multiply
    330,397.80x = 495,615.54 × 93,721.92
  4. Step 4: Simplify right side
    330,397.80x = 46,450,039,990.64
  5. Step 5: Solve for x
    x = 46,450,039,990.64/330,397.80
  6. Step 6: Final answer
    x = 140,588.22

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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.