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Finding the Fourth Proportional to 413,515.30, 620,272.95 and 133,060.90

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Solution

The fourth proportional to 413,515.30, 620,272.95 and 133,060.90 is: 199,591.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,515.30 : 620,272.95 = 133,060.90 : x
  2. Step 2: Convert to fraction form
    413,515.30/620,272.95 = 133,060.90/x
  3. Step 3: Cross multiply
    413,515.30x = 620,272.95 × 133,060.90
  4. Step 4: Simplify right side
    413,515.30x = 82,534,076,972.66
  5. Step 5: Solve for x
    x = 82,534,076,972.66/413,515.30
  6. Step 6: Final answer
    x = 199,591.35

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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.