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Finding the Fourth Proportional to 464,920.80, 697,381.20 and 127,960.80

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Solution

The fourth proportional to 464,920.80, 697,381.20 and 127,960.80 is: 191,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,920.80 : 697,381.20 = 127,960.80 : x
  2. Step 2: Convert to fraction form
    464,920.80/697,381.20 = 127,960.80/x
  3. Step 3: Cross multiply
    464,920.80x = 697,381.20 × 127,960.80
  4. Step 4: Simplify right side
    464,920.80x = 89,237,456,256.96
  5. Step 5: Solve for x
    x = 89,237,456,256.96/464,920.80
  6. Step 6: Final answer
    x = 191,941.20

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Similar ratio
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1.5x scale

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.